UI issue on file save when using Dex option

[hla]

TLDR: Checkbox to confirm file type not visible when using Dex mode.

I recently bought a Samsung Galaxy Tab A9+. It has support for the Samsung Dex "desktop like mode". When saving file, if using "normal mode" (meaning not having Dex activated) I can see the checkmark on the save as dialog (upper right corner), but when I activate Dex mode, run the app and try to save the file, the checkmark is not visible due I presume to the additional bar of the application window.

Since I activated Dex first, I took me a long time to figure out the problem. I thought the application freezes when selecting file type (because of beta), web searches and AI replies all focused (wrongly) on "probable permission issues".