diff --git a/src/cascadia/WpfTerminalControl/TerminalContainer.cs b/src/cascadia/WpfTerminalControl/TerminalContainer.cs
index ae3e3e99a27..ef3b704dafd 100644
--- a/src/cascadia/WpfTerminalControl/TerminalContainer.cs
+++ b/src/cascadia/WpfTerminalControl/TerminalContainer.cs
@@ -100,6 +100,13 @@ internal void UserScroll(int viewTop)
         internal void SetTheme(TerminalTheme theme, string fontFamily, short fontSize, int newDpi)
         {
             NativeMethods.TerminalSetTheme(this.terminal, theme, fontFamily, fontSize, newDpi);
+
+            NativeMethods.TerminalTriggerResize(this.terminal, this.ActualWidth, this.ActualHeight, out var dimensions);
+
+            this.Rows = dimensions.Y;
+            this.Columns = dimensions.X;
+
+            this.connection?.Resize((uint)dimensions.Y, (uint)dimensions.X);
         }
 
         /// <summary>
@@ -115,6 +122,7 @@ internal void SetTheme(TerminalTheme theme, string fontFamily, short fontSize, i
             this.Rows = dimensions.Y;
             this.Columns = dimensions.X;
 
+            this.connection?.Resize((uint)dimensions.Y, (uint)dimensions.X);
             return (dimensions.Y, dimensions.X);
         }
 
@@ -132,6 +140,11 @@ internal void Resize(uint rows, uint columns)
             };
 
             NativeMethods.TerminalResize(this.terminal, dimensions);
+
+            this.Rows = dimensions.Y;
+            this.Columns = dimensions.X;
+
+            this.connection?.Resize((uint)dimensions.Y, (uint)dimensions.X);
         }
 
         /// <inheritdoc/>