White bar or something in the center of the app

[SpaceTimeEvent2]

Environment

npm ls react-native-macos: react-native-macos@0.78.2
node -v v22.14.0
npm -v 10.9.2
xcodebuild -version Xcode 16.3 Build version 16E140

Steps to reproduce the bug

npx @react-native-community/cli@latest init RedBox4 --version 0.78.2
cd RedBox4
npx react-native-macos-init
cd macos
npx pod-install
cd ..
npm start (on separate terminal)
npx react-native run-macos

Expected Behavior

No response

Actual Behavior

No response

Reproducible Demo

No response

Additional context

I have no idea what it is and how to get rid of it (see the screenshot). It's not the part of react code, it stays even if i remove react code altogether, likely has to do something with spawning the window on native side.
Also I can't just close the app, I have to kill the process from Activity Monitor

[Saadnajmi]

The fix for this is merged and will be in the next patch release. You can disable this with RCTDevLoadingViewSetEnabled(false) in your app delegate

[SpaceTimeEvent2]

The fix for this is merged and will be in the next patch release. You can disable this with RCTDevLoadingViewSetEnabled(false) in your app delegate

It helped, thank you!

Btw for anyone interested where to add the lines:

`#macos/RedBox4-macOS/AppDelegate.mm
++ #import <React/RCTDevLoadingViewSetEnabled.h>

@implementation AppDelegate

• (void)applicationDidFinishLaunching:(NSNotification *)notification
  {
  ++ RCTDevLoadingViewSetEnabled(false);
  self.moduleName = @"RedBox4";`