Mail export window getting larger MacOS Tahoe on Mac Mini M4

When i export a mailbox in Apple Mail on my Mac Mini M4 running MacOS 26 Tahoe, that export window gets larger every time i use it, first time i used export (or after deleting com.apple.mail.plist) it has a normal size, but every time after that it gets bigger, after a number of exports it doesn't fit on my screen any more and i'll have to blindly hit enter and hope the export goes to the correct folder.

Then after deleting the com.apple.mail.plist, it all goes back to first a normal sized export window and then again every next time i use export the window starts growing again.

Functionality is still okay but it's quite annoying.

Someone else have the same issue?

Thanks, Gert-Jan.