diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6ff8953402d2..aab4a5be9e00 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## \[Unreleased\]
 ### Added
-- Helm: Added configurable default storage option to chart(<https://github.com/opencv/cvat/pull/6137>)
 - Multi-line text attributes supported (<https://github.com/opencv/cvat/pull/6458>)
 - Now you can configure default attribute value for SELECT, RADIO types on UI
  (<https://github.com/opencv/cvat/pull/6474>)
@@ -15,13 +14,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   (<https://github.com/opencv/cvat/pull/6428>)
 
 ### Changed
-- Helm: Added configurable default storage option to chart(<https://github.com/opencv/cvat/pull/6137>)
+- \[Helm\] Added configurable default storage option to chart (<https://github.com/opencv/cvat/pull/6137>)
 
 ### Deprecated
 - TDB
 
 ### Removed
-- Helm: Removed hardcoded mandatory traefik ingress usage(<https://github.com/opencv/cvat/pull/6137>)
+- \[Helm\] Removed hardcoded mandatory traefik ingress usage(<https://github.com/opencv/cvat/pull/6137>)
 
 ### Fixed
 - Calculating number of objects on annotation view when frames are deleted
@@ -34,10 +33,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixed SAM plugin (403 code for workers in organizations) (<https://github.com/opencv/cvat/pull/6514>)
 - Using initial frame from query parameter to open specific frame in a job
  (<https://github.com/opencv/cvat/pull/6506>)
-- Helm: fixed issue with multiple caches in same RWX volume, which prevents db migration to start(<https://github.com/opencv/cvat/pull/6137>)
+- Problem with first keyframe removing (<https://github.com/opencv/cvat/pull/6494>)
 - Server-side validation for attribute specifications
   (<https://github.com/opencv/cvat/pull/6447>)
 - \[API\] File downloading failures for filenames with special characters l(<https://github.com/opencv/cvat/pull/6492>)
+- \[Helm\] fixed issue with multiple caches in same RWX volume, which prevents db migration to start (<https://github.com/opencv/cvat/pull/6137>)
 
 ### Security
 - TDB
diff --git a/cvat/apps/dataset_manager/task.py b/cvat/apps/dataset_manager/task.py
index 66fd499a6002..1269883e30fa 100644
--- a/cvat/apps/dataset_manager/task.py
+++ b/cvat/apps/dataset_manager/task.py
@@ -160,6 +160,7 @@ def _add_missing_shape(self, track, first_shape):
             missing_shape = deepcopy(first_shape)
             missing_shape["frame"] = track["frame"]
             missing_shape["outside"] = True
+            missing_shape.pop("id")
             track["shapes"].append(missing_shape)
 
     def _correct_frame_of_tracked_shapes(self, track):
diff --git a/cvat/apps/engine/views.py b/cvat/apps/engine/views.py
index 4d498d495a0a..3740d2a47568 100644
--- a/cvat/apps/engine/views.py
+++ b/cvat/apps/engine/views.py
@@ -194,13 +194,13 @@ def annotation_formats(request):
         })
     @action(detail=False, methods=['GET'], url_path='plugins', serializer_class=PluginsSerializer)
     def plugins(request):
-        response = {
+        data = {
             'GIT_INTEGRATION': apps.is_installed('cvat.apps.dataset_repo'),
             'ANALYTICS': strtobool(os.environ.get("CVAT_ANALYTICS", '0')),
             'MODELS': strtobool(os.environ.get("CVAT_SERVERLESS", '0')),
             'PREDICT': False, # FIXME: it is unused anymore (for UI only)
         }
-        return Response(response)
+        return Response(PluginsSerializer(data).data)
 
 @extend_schema(tags=['projects'])
 @extend_schema_view(
diff --git a/cvat/apps/iam/permissions.py b/cvat/apps/iam/permissions.py
index 2a1893e8b1b9..f568415fbec9 100644
--- a/cvat/apps/iam/permissions.py
+++ b/cvat/apps/iam/permissions.py
@@ -62,7 +62,7 @@ def get_organization(request, obj):
         except AttributeError as exc:
             # Skip initialization of organization for those objects that don't related with organization
             view = request.parser_context.get('view')
-            if view and view.basename in ('user', 'function', 'request',):
+            if view and view.basename in ('user', 'function', 'request', 'server'):
                 return request.iam_context['organization']
 
             raise exc
diff --git a/tests/python/rest_api/test_tasks.py b/tests/python/rest_api/test_tasks.py
index 0184f66e56c9..98c443b290bd 100644
--- a/tests/python/rest_api/test_tasks.py
+++ b/tests/python/rest_api/test_tasks.py
@@ -517,6 +517,22 @@ def test_member_update_task_annotation(
 
         self._test_check_response(is_allow, response, data)
 
+    def test_remove_first_keyframe(self):
+        endpoint = "tasks/8/annotations"
+        shapes0 = [
+            {"type": "rectangle", "frame": 1, "points": [1, 2, 3, 4]},
+            {"type": "rectangle", "frame": 4, "points": [5, 6, 7, 8]},
+        ]
+
+        annotations = {"tracks": [{"label_id": 13, "frame": 0, "shapes": shapes0}]}
+
+        response = patch_method("admin1", endpoint, annotations, action="create")
+        assert response.status_code == HTTPStatus.OK, response.content
+
+        annotations["tracks"][0]["shapes"] = shapes0[1:]
+        response = patch_method("admin1", endpoint, annotations, action="update")
+        assert response.status_code == HTTPStatus.OK
+
 
 @pytest.mark.usefixtures("restore_db_per_class")
 class TestGetTaskDataset: