diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index 2f242742a..3eeee9231 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -88,6 +88,10 @@ Docking+Viewports Branch:
 - Viewports:
   - Fixed an issue where the implicit "Debug" window while hidden would erroneously
     interfere with merging secondary viewports into the main viewport.
+- Docking:
+  - Fixed behavior change/regression in 1.92.8 where a window using the
+    ImGuiWindowFlags_AlwaysAutoResize flag would have ItemWidth default
+    change when docked. (#9355, #9443) [@reybits]
 
 
 -----------------------------------------------------------------------
diff --git a/imgui.cpp b/imgui.cpp
index b1d3c8588..9262002aa 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -8591,7 +8591,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
         // Default item width. Make it proportional to window size if window can be manually resized.
         // (we cannot use AutoFitFramesX/AutoFitFramesY which is a temporary state)
         bool is_resizable_width;
-        if (flags & ImGuiWindowFlags_ChildWindow)
+        if ((flags & ImGuiWindowFlags_ChildWindow) && !window->DockIsActive)
             is_resizable_width = (window->Size.x > 0.0f) && !(window->ChildFlags & (ImGuiChildFlags_AutoResizeX | ImGuiChildFlags_AlwaysAutoResize));
         else
             is_resizable_width = (window->Size.x > 0.0f) && !(flags & ImGuiWindowFlags_AlwaysAutoResize);