fix(v2): prevent WebView crash on macOS 26 during rapid UI updates (#4806)

Disable suppressesIncrementalRendering on macOS 26+ (Tahoe) to prevent
WebView crashes when the frontend performs frequent UI updates.

Fixes #4592

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude <noreply@anthropic.com>

Author: leaanthony

v2/internal/frontend/desktop/darwin/WailsContext.m

@@ -215,7 +215,13 @@ - (void) CreateWindow:(int)width :(int)height :(bool)frameless :(bool)resizable
 
     // Webview stuff here!
     WKWebViewConfiguration *config = [WKWebViewConfiguration new];
-    config.suppressesIncrementalRendering = true;
+    // Disable suppressesIncrementalRendering on macOS 26+ to prevent WebView crashes
+    // during rapid UI updates. See: https://github.com/wailsapp/wails/issues/4592
+    if (@available(macOS 26.0, *)) {
+        config.suppressesIncrementalRendering = false;
+    } else {
+        config.suppressesIncrementalRendering = true;
+    }
     config.applicationNameForUserAgent = @"wails.io";
     [config setURLSchemeHandler:self forURLScheme:@"wails"];
 

website/src/pages/changelog.mdx

@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Fixed WebView crash on macOS 26 (Tahoe) during rapid UI updates [#4592](https://github.com/wailsapp/wails/issues/4592) by @leaanthony
 - Updated menu reference docs with complete imports by @agilgur5 in [#4727](https://github.com/wailsapp/wails/pull/4727) and [#4742](https://github.com/wailsapp/wails/pull/4742)
 - Fixed menu reference syntax by @agilgur5 in [#4726](https://github.com/wailsapp/wails/pull/4726)
 - Fixed indentation in Application Development guide by @agilgur5 in [#4730](https://github.com/wailsapp/wails/pull/4730)