From 65cb048b1bf355e1501213784245511ac9a3f8bc Mon Sep 17 00:00:00 2001
From: daboe01 <daboe01@googlemail.com>
Date: Fri, 3 Apr 2026 17:40:45 +0200
Subject: [PATCH] Fixed: incorrect CPWebView sizing after animation

---
 AppKit/CPWebView.j | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/AppKit/CPWebView.j b/AppKit/CPWebView.j
index f39d9ee40..35a65860e 100644
--- a/AppKit/CPWebView.j
+++ b/AppKit/CPWebView.j
@@ -278,7 +278,11 @@ CPWebViewAppKitScrollMaxPollCount                  = 3;
 
     if (_effectiveScrollMode === CPWebViewScrollAppKit)
     {
-        var visibleRect = [_frameView visibleRect];
+        // Use `[_scrollView documentVisibleRect]` instead of `[_frameView visibleRect]`.
+        // `visibleRect` accounts for window clipping, which collapses to 0x0 if the view is 
+        // animated off-screen, resulting in an incorrectly shrunken web layout.
+        var visibleRect = [_scrollView documentVisibleRect];
+        
         [_frameView setFrameSize:CGSizeMake(CGRectGetMaxX(visibleRect), CGRectGetMaxY(visibleRect))];
 
         // try to get the document size so we can correctly set the frame