diff --git a/patches/chromium/.patches b/patches/chromium/.patches
index 545165e4e06ad..c470189487c06 100644
--- a/patches/chromium/.patches
+++ b/patches/chromium/.patches
@@ -114,3 +114,4 @@ port_autofill_colors_to_the_color_pipeline.patch
 build_disable_partition_alloc_on_mac.patch
 build_disable_thin_lto_on_mac.patch
 fix_non-client_mouse_tracking_and_message_bubbling_on_windows.patch
+remove_incorrect_width_height_adjustments.patch
diff --git a/patches/chromium/remove_incorrect_width_height_adjustments.patch b/patches/chromium/remove_incorrect_width_height_adjustments.patch
new file mode 100644
index 0000000000000..4fce52ba6e282
--- /dev/null
+++ b/patches/chromium/remove_incorrect_width_height_adjustments.patch
@@ -0,0 +1,39 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Bruce Dawson <brucedawson@chromium.org>
+Date: Mon, 28 Feb 2022 19:07:41 +0000
+Subject: Remove incorrect width/height adjustments
+
+In late 2016 a change which fixed some problems around window sizing
+when attaching or detaching additional displays was landed, which fixed
+some genuine bugs. Unfortunately it included a subtraction of 1 from the
+width and height of the Chrome window. I couldn't find any discussion of
+this size adjustment and I think that it was just a misunderstanding of
+how window rectangles work (inclusive versus exclusive extents).
+
+This size adjustment causes non-maximized Chrome windows to shrink every
+time a monitor is added or removed. The problematic commit was found
+by the bug-filer through a bisect of more than four years of Chrome
+history - I'm just landing the fix that they suggested.
+
+Bug: 1300415
+Change-Id: Ief124f584a91aa9cc3f10704b0cc1e83356dea5b
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3492658
+Reviewed-by: Allen Bauer <kylixrd@chromium.org>
+Commit-Queue: Bruce Dawson <brucedawson@chromium.org>
+Cr-Commit-Position: refs/heads/main@{#975872}
+
+diff --git a/ui/views/win/hwnd_message_handler.cc b/ui/views/win/hwnd_message_handler.cc
+index 264a9109e42c23e9be6bf7269b3cfee2634b61e4..86f06d2a2c9588a2210a9f78f47e73f1b7c5e329 100644
+--- a/ui/views/win/hwnd_message_handler.cc
++++ b/ui/views/win/hwnd_message_handler.cc
+@@ -2834,8 +2834,8 @@ void HWNDMessageHandler::OnWindowPosChanging(WINDOWPOS* window_pos) {
+       // (Win+Shift+Arrows). See crbug.com/656001.
+       window_rect.left = window_pos->x;
+       window_rect.top = window_pos->y;
+-      window_rect.right = window_pos->x + window_pos->cx - 1;
+-      window_rect.bottom = window_pos->y + window_pos->cy - 1;
++      window_rect.right = window_pos->x + window_pos->cx;
++      window_rect.bottom = window_pos->y + window_pos->cy;
+     }
+ 
+     HMONITOR monitor;