Full size modals (including LogBox) not respecting window size on Catalyst

When launched in Catalyst on the Mac, certain React Native modal components (including the LogBox) don’t seem to respect the size of the window. Instead of being full screen (a la iOS) modal, it gets stuck at ~740x395. Resizing the window, although it affects the bottom bar LogBox notification, does not resize the modal dialog itself.

This is inconsequential for a non-user-facing feature like LogBox, but it affects other elements as well (like react-native-modal).

React Native version:

0.63.3, 0.63.4, 0.64.0-rc2

Steps To Reproduce

1. Download either sample repo: 0.64.0-rc2 (https://github.com/jnpdx/RN-CatalystTest-64) or 0.63.4 (https://github.com/jnpdx/RN-CatalystTest) (note: these are just bare-bones React Native projects with small edits to make them work on Catalyst, like getting rid of Flipper)
2. From the project directory, run yarn install and then cd ios && pod install
3. Make sure that “My Mac” is chosen as the launch target
4. You must change the “Team” in “Signing and capabilities” to your own Team ID for both the CatalystTest target AND the React-Core-Accessibility bundle (in the Pods project) or else Xcode won’t build/compile
5. Launch the sample app and tap the LogBox error at the bottom of the screen

Expected Results

LogBox should be a full screen modal and respect window resizing

Snack, code example, screenshot, or link to a repository:

0.64.0-rc2 (https://github.com/jnpdx/RN-CatalystTest-64) 0.63.4 (https://github.com/jnpdx/RN-CatalystTest)

[Arkkeeper]

I’ll try to publish some fixes used by our team as a new PR this or next week, hope it will be merged this time.

[exotexot]

The Dimensions object does NOT update when resizing windows in Catalyst. Neither does https://reactnative.dev/docs/usewindowdimensions fire on window resize events.

Using rn 0.70