Fedora 43, RDM Flatpak 2025.3.0.9 - RDM main window size gets larger every time I launch the application

Greetings,

When I close RDM and subsequently reopen it at a later time, the vertical size of the window increases on it's own. Workflow is something like this:

1) Using RDM, close RDM.
2) After some time, restart RDM.
3) RDM asks for password, enter password.
4) I see the brief splash screen, and the application loads in the background at the correct size.
5) Once the application is finished loading, it inexplicable expands it's vertical dimensions by about 0.5in, or so.
6) This behavior occurs once upon every start of the application until it has reached the bounds of the screen.