diff --git a/fixtures/dom/src/components/fixtures/text-inputs/index.js b/fixtures/dom/src/components/fixtures/text-inputs/index.js
index af71edcbb5cbf..c92b44e11a8a2 100644
--- a/fixtures/dom/src/components/fixtures/text-inputs/index.js
+++ b/fixtures/dom/src/components/fixtures/text-inputs/index.js
@@ -64,13 +64,25 @@ class TextInputFixtures extends React.Component {
           <Fixture>
             <form className="control-box">
               <fieldset>
-                <legend>Text</legend>
+                <legend>Empty value prop string</legend>
+                <input value="" required={true} />
+              </fieldset>
+              <fieldset>
+                <legend>No value prop</legend>
                 <input required={true} />
               </fieldset>
               <fieldset>
-                <legend>Date</legend>
+                <legend>Empty defaultValue prop string</legend>
+                <input required={true} defaultValue="" />
+              </fieldset>
+              <fieldset>
+                <legend>No value prop date input</legend>
                 <input type="date" required={true} />
               </fieldset>
+              <fieldset>
+                <legend>Empty value prop date input</legend>
+                <input type="date" value="" required={true} />
+              </fieldset>
             </form>
           </Fixture>
 
@@ -78,7 +90,10 @@ class TextInputFixtures extends React.Component {
             Checking the date type is also important because of a prior fix for
             iOS Safari that involved assigning over value/defaultValue
             properties of the input to prevent a display bug. This also
-            triggered input validation.
+            triggers input validation.
+          </p>
+          <p className="footnote">
+            The date inputs should be blank in iOS. This is not a bug.
           </p>
         </TestCase>
 
diff --git a/packages/react-dom/src/client/ReactDOMFiberInput.js b/packages/react-dom/src/client/ReactDOMFiberInput.js
index fd5a574fec377..475b444b55dbf 100644
--- a/packages/react-dom/src/client/ReactDOMFiberInput.js
+++ b/packages/react-dom/src/client/ReactDOMFiberInput.js
@@ -209,16 +209,24 @@ export function postMountWrapper(element: Element, props: Object) {
   const node = ((element: any): InputWithWrapperState);
 
   if (props.hasOwnProperty('value') || props.hasOwnProperty('defaultValue')) {
+    const initialValue = '' + node._wrapperState.initialValue;
+    const currentValue = node.value;
+
     // Do not assign value if it is already set. This prevents user text input
     // from being lost during SSR hydration.
-    if (node.value === '') {
-      node.value = '' + node._wrapperState.initialValue;
+    if (currentValue === '') {
+      // Do not re-assign the value property if there is no change. This
+      // potentially avoids a DOM write and prevents Firefox (~60.0.1) from
+      // prematurely marking required inputs as invalid
+      if (initialValue !== currentValue) {
+        node.value = initialValue;
+      }
     }
 
     // value must be assigned before defaultValue. This fixes an issue where the
     // visually displayed value of date inputs disappears on mobile Safari and Chrome:
     // https://github.com/facebook/react/issues/7233
-    node.defaultValue = '' + node._wrapperState.initialValue;
+    node.defaultValue = initialValue;
   }
 
   // Normally, we'd just do `node.checked = node.checked` upon initial mount, less this bug
diff --git a/scripts/rollup/results.json b/scripts/rollup/results.json
index b04285dbe9ab0..a55fc7117d77f 100644
--- a/scripts/rollup/results.json
+++ b/scripts/rollup/results.json
@@ -46,29 +46,29 @@
       "filename": "react-dom.development.js",
       "bundleType": "UMD_DEV",
       "packageName": "react-dom",
-      "size": 636515,
-      "gzip": 148265
+      "size": 639265,
+      "gzip": 148740
     },
     {
       "filename": "react-dom.production.min.js",
       "bundleType": "UMD_PROD",
       "packageName": "react-dom",
-      "size": 95960,
-      "gzip": 31067
+      "size": 96122,
+      "gzip": 31112
     },
     {
       "filename": "react-dom.development.js",
       "bundleType": "NODE_DEV",
       "packageName": "react-dom",
-      "size": 620506,
-      "gzip": 144162
+      "size": 623256,
+      "gzip": 144651
     },
     {
       "filename": "react-dom.production.min.js",
       "bundleType": "NODE_PROD",
       "packageName": "react-dom",
-      "size": 94422,
-      "gzip": 30018
+      "size": 94587,
+      "gzip": 30076
     },
     {
       "filename": "ReactDOM-dev.js",
@@ -221,29 +221,29 @@
       "filename": "react-art.development.js",
       "bundleType": "UMD_DEV",
       "packageName": "react-art",
-      "size": 413567,
-      "gzip": 92395
+      "size": 416004,
+      "gzip": 92806
     },
     {
       "filename": "react-art.production.min.js",
       "bundleType": "UMD_PROD",
       "packageName": "react-art",
-      "size": 82648,
-      "gzip": 25481
+      "size": 82821,
+      "gzip": 25516
     },
     {
       "filename": "react-art.development.js",
       "bundleType": "NODE_DEV",
       "packageName": "react-art",
-      "size": 337640,
-      "gzip": 73051
+      "size": 340077,
+      "gzip": 73406
     },
     {
       "filename": "react-art.production.min.js",
       "bundleType": "NODE_PROD",
       "packageName": "react-art",
-      "size": 46153,
-      "gzip": 14348
+      "size": 46325,
+      "gzip": 14365
     },
     {
       "filename": "ReactART-dev.js",
@@ -291,29 +291,29 @@
       "filename": "react-test-renderer.development.js",
       "bundleType": "UMD_DEV",
       "packageName": "react-test-renderer",
-      "size": 347431,
-      "gzip": 75093
+      "size": 348566,
+      "gzip": 75374
     },
     {
       "filename": "react-test-renderer.production.min.js",
       "bundleType": "UMD_PROD",
       "packageName": "react-test-renderer",
-      "size": 46664,
-      "gzip": 14400
+      "size": 46908,
+      "gzip": 14528
     },
     {
       "filename": "react-test-renderer.development.js",
       "bundleType": "NODE_DEV",
       "packageName": "react-test-renderer",
-      "size": 338042,
-      "gzip": 72285
+      "size": 339177,
+      "gzip": 72575
     },
     {
       "filename": "react-test-renderer.production.min.js",
       "bundleType": "NODE_PROD",
       "packageName": "react-test-renderer",
-      "size": 45745,
-      "gzip": 13915
+      "size": 45991,
+      "gzip": 14065
     },
     {
       "filename": "ReactTestRenderer-dev.js",
@@ -375,29 +375,29 @@
       "filename": "react-reconciler.development.js",
       "bundleType": "NODE_DEV",
       "packageName": "react-reconciler",
-      "size": 331575,
-      "gzip": 70231
+      "size": 332072,
+      "gzip": 70324
     },
     {
       "filename": "react-reconciler.production.min.js",
       "bundleType": "NODE_PROD",
       "packageName": "react-reconciler",
-      "size": 46245,
-      "gzip": 13814
+      "size": 46262,
+      "gzip": 13819
     },
     {
       "filename": "react-reconciler-persistent.development.js",
       "bundleType": "NODE_DEV",
       "packageName": "react-reconciler",
-      "size": 330095,
-      "gzip": 69615
+      "size": 330592,
+      "gzip": 69703
     },
     {
       "filename": "react-reconciler-persistent.production.min.js",
       "bundleType": "NODE_PROD",
       "packageName": "react-reconciler",
-      "size": 46256,
-      "gzip": 13819
+      "size": 46273,
+      "gzip": 13824
     },
     {
       "filename": "react-reconciler-reflection.development.js",
@@ -515,15 +515,15 @@
       "filename": "ReactDOM-dev.js",
       "bundleType": "FB_WWW_DEV",
       "packageName": "react-dom",
-      "size": 643334,
-      "gzip": 146983
+      "size": 646066,
+      "gzip": 147453
     },
     {
       "filename": "ReactDOM-prod.js",
       "bundleType": "FB_WWW_PROD",
       "packageName": "react-dom",
-      "size": 280306,
-      "gzip": 52771
+      "size": 281070,
+      "gzip": 52902
     },
     {
       "filename": "ReactTestUtils-dev.js",
@@ -564,78 +564,78 @@
       "filename": "ReactART-dev.js",
       "bundleType": "FB_WWW_DEV",
       "packageName": "react-art",
-      "size": 343294,
-      "gzip": 72413
+      "size": 345713,
+      "gzip": 72778
     },
     {
       "filename": "ReactART-prod.js",
       "bundleType": "FB_WWW_PROD",
       "packageName": "react-art",
-      "size": 150369,
-      "gzip": 25956
+      "size": 151089,
+      "gzip": 26031
     },
     {
       "filename": "ReactNativeRenderer-dev.js",
       "bundleType": "RN_FB_DEV",
       "packageName": "react-native-renderer",
-      "size": 468415,
-      "gzip": 102416
+      "size": 468774,
+      "gzip": 102457
     },
     {
       "filename": "ReactNativeRenderer-prod.js",
       "bundleType": "RN_FB_PROD",
       "packageName": "react-native-renderer",
-      "size": 210769,
-      "gzip": 36828
+      "size": 210616,
+      "gzip": 36800
     },
     {
       "filename": "ReactNativeRenderer-dev.js",
       "bundleType": "RN_OSS_DEV",
       "packageName": "react-native-renderer",
-      "size": 468069,
-      "gzip": 102344
+      "size": 468428,
+      "gzip": 102391
     },
     {
       "filename": "ReactNativeRenderer-prod.js",
       "bundleType": "RN_OSS_PROD",
       "packageName": "react-native-renderer",
-      "size": 198322,
-      "gzip": 34717
+      "size": 198313,
+      "gzip": 34718
     },
     {
       "filename": "ReactFabric-dev.js",
       "bundleType": "RN_FB_DEV",
       "packageName": "react-native-renderer",
-      "size": 459114,
-      "gzip": 100116
+      "size": 459473,
+      "gzip": 100166
     },
     {
       "filename": "ReactFabric-prod.js",
       "bundleType": "RN_FB_PROD",
       "packageName": "react-native-renderer",
-      "size": 190386,
-      "gzip": 33327
+      "size": 190377,
+      "gzip": 33325
     },
     {
       "filename": "ReactFabric-dev.js",
       "bundleType": "RN_OSS_DEV",
       "packageName": "react-native-renderer",
-      "size": 459151,
-      "gzip": 100132
+      "size": 459510,
+      "gzip": 100184
     },
     {
       "filename": "ReactFabric-prod.js",
       "bundleType": "RN_OSS_PROD",
       "packageName": "react-native-renderer",
-      "size": 190422,
-      "gzip": 33346
+      "size": 190413,
+      "gzip": 33343
     },
     {
       "filename": "ReactTestRenderer-dev.js",
       "bundleType": "FB_WWW_DEV",
       "packageName": "react-test-renderer",
-      "size": 344028,
-      "gzip": 71858
+      "size": 345219,
+      "gzip": 72155
     },
     {
       "filename": "ReactShallowRenderer-dev.js",
@@ -662,29 +662,29 @@
       "filename": "react-scheduler.development.js",
       "bundleType": "UMD_DEV",
       "packageName": "react-scheduler",
-      "size": 14094,
-      "gzip": 4681
+      "size": 16042,
+      "gzip": 4949
     },
     {
       "filename": "react-scheduler.production.min.js",
       "bundleType": "UMD_PROD",
       "packageName": "react-scheduler",
-      "size": 2142,
-      "gzip": 1068
+      "size": 2323,
+      "gzip": 1100
     },
     {
       "filename": "react-scheduler.development.js",
       "bundleType": "NODE_DEV",
       "packageName": "react-scheduler",
-      "size": 13898,
-      "gzip": 4632
+      "size": 15846,
+      "gzip": 4900
     },
     {
       "filename": "react-scheduler.production.min.js",
       "bundleType": "NODE_PROD",
       "packageName": "react-scheduler",
-      "size": 2230,
-      "gzip": 1097
+      "size": 2417,
+      "gzip": 1121
     },
     {
       "filename": "SimpleCacheProvider-dev.js",