diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index 6f6d0be..dc01896 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -30,6 +30,18 @@
   and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
 - Please report any issue!
 
+-----------------------------------------------------------------------
+ VERSION 1.85 WIP (In Progress)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Removed GetWindowContentRegionWidth() function. keep inline redirection helper.
+  Can use 'GetWindowContentRegionMax().x - GetWindowContentRegionMin().x' instead but it's not
+  very useful in practice, and the only use of it in the demo was illfit.
+
+
+Other Changes:
 
 -----------------------------------------------------------------------
  VERSION 1.84.2 (Released 2021-08-23)
diff --git a/imgui.cpp b/imgui.cpp
index f21509e..d37315a 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -376,6 +376,7 @@
  When you are not sure about an old symbol or function name, try using the Search/Find function of your IDE to look for comments or references in all imgui files.
  You can read releases logs https://github.com/ocornut/imgui/releases for more details.
 
+ - 2021/08/23 (1.85) - removed GetWindowContentRegionWidth() function. keep inline redirection helper. can use 'GetWindowContentRegionMax().x - GetWindowContentRegionMin().x' instead.
  - 2021/07/26 (1.84) - commented out redirecting functions/enums names that were marked obsolete in 1.67 and 1.69 (March 2019):
                         - ImGui::GetOverlayDrawList() -> use ImGui::GetForegroundDrawList()
                         - ImFont::GlyphRangesBuilder  -> use ImFontGlyphRangesBuilder
@@ -6618,7 +6619,7 @@
 }
 
 // BeginDisabled()/EndDisabled()
-// - Those can be nested but this cannot be used to enable an already disabled section (a single BeginDisabled(true) in the stack is enough to keep things disabled)
+// - Those can be nested but it cannot be used to enable an already disabled section (a single BeginDisabled(true) in the stack is enough to keep everything disabled)
 // - Visually this is currently altering alpha, but it is expected that in a future styling system this would work differently.
 // - Feedback welcome at https://github.com/ocornut/imgui/issues/211
 // - BeginDisabled(false) essentially does nothing useful but is provided to facilitate use of boolean expressions. If you can avoid calling BeginDisabled(False)/EndDisabled() best to avoid it.
@@ -7416,7 +7417,6 @@
 // - GetContentRegionMaxAbs() [Internal]
 // - GetContentRegionAvail(),
 // - GetWindowContentRegionMin(), GetWindowContentRegionMax()
-// - GetWindowContentRegionWidth()
 // - BeginGroup()
 // - EndGroup()
 // Also see in imgui_widgets: tab bars, columns.
@@ -7784,12 +7784,6 @@
     return window->ContentRegionRect.Max - window->Pos;
 }
 
-float ImGui::GetWindowContentRegionWidth()
-{
-    ImGuiWindow* window = GImGui->CurrentWindow;
-    return window->ContentRegionRect.GetWidth();
-}
-
 // Lock horizontal starting position + capture group bounding box into one "item" (so you can use IsItemHovered() or layout primitives such as SameLine() on whole group, etc.)
 // Groups are currently a mishmash of functionalities which should perhaps be clarified and separated.
 void ImGui::BeginGroup()
diff --git a/imgui.h b/imgui.h
index 27397e0..9a9df67 100644
--- a/imgui.h
+++ b/imgui.h
@@ -379,9 +379,8 @@
     // - Those functions are bound to be redesigned (they are confusing, incomplete and the Min/Max return values are in local window coordinates which increases confusion)
     IMGUI_API ImVec2        GetContentRegionAvail();                                        // == GetContentRegionMax() - GetCursorPos()
     IMGUI_API ImVec2        GetContentRegionMax();                                          // current content boundaries (typically window boundaries including scrolling, or current column boundaries), in windows coordinates
-    IMGUI_API ImVec2        GetWindowContentRegionMin();                                    // content boundaries min (roughly (0,0)-Scroll), in window coordinates
-    IMGUI_API ImVec2        GetWindowContentRegionMax();                                    // content boundaries max (roughly (0,0)+Size-Scroll) where Size can be override with SetNextWindowContentSize(), in window coordinates
-    IMGUI_API float         GetWindowContentRegionWidth();                                  //
+    IMGUI_API ImVec2        GetWindowContentRegionMin();                                    // content boundaries min for the full window (roughly (0,0)-Scroll), in window coordinates
+    IMGUI_API ImVec2        GetWindowContentRegionMax();                                    // content boundaries max for the full window (roughly (0,0)+Size-Scroll) where Size can be override with SetNextWindowContentSize(), in window coordinates
 
     // Windows Scrolling
     IMGUI_API float         GetScrollX();                                                   // get scrolling amount [0 .. GetScrollMaxX()]
@@ -813,6 +812,7 @@
 
     // Disabling [BETA API]
     // - Disable all user interactions and dim items visuals (applying style.DisabledAlpha over current colors)
+    // - Those can be nested but it cannot be used to enable an already disabled section (a single BeginDisabled(true) in the stack is enough to keep everything disabled)
     // - BeginDisabled(false) essentially does nothing useful but is provided to facilitate use of boolean expressions. If you can avoid calling BeginDisabled(False)/EndDisabled() best to avoid it.
     IMGUI_API void          BeginDisabled(bool disabled = true);
     IMGUI_API void          EndDisabled();
@@ -2816,6 +2816,8 @@
 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
 namespace ImGui
 {
+    // OBSOLETED in 1.85 (from August 2021)
+    static inline float GetWindowContentRegionWidth() { return GetWindowContentRegionMax().x - GetWindowContentRegionMin().x; }
     // OBSOLETED in 1.81 (from February 2021)
     IMGUI_API bool      ListBoxHeader(const char* label, int items_count, int height_in_items = -1); // Helper to calculate size from items_count and height_in_items
     static inline bool  ListBoxHeader(const char* label, const ImVec2& size = ImVec2(0, 0)) { return BeginListBox(label, size); }
diff --git a/imgui_demo.cpp b/imgui_demo.cpp
index 5b7a9e1..0183784 100644
--- a/imgui_demo.cpp
+++ b/imgui_demo.cpp
@@ -2372,7 +2372,7 @@
             ImGuiWindowFlags window_flags = ImGuiWindowFlags_HorizontalScrollbar;
             if (disable_mouse_wheel)
                 window_flags |= ImGuiWindowFlags_NoScrollWithMouse;
-            ImGui::BeginChild("ChildL", ImVec2(ImGui::GetWindowContentRegionWidth() * 0.5f, 260), false, window_flags);
+            ImGui::BeginChild("ChildL", ImVec2(ImGui::GetContentRegionAvail().x * 0.5f, 260), false, window_flags);
             for (int i = 0; i < 100; i++)
                 ImGui::Text("%04d: scrollable region", i);
             ImGui::EndChild();