Curt, might be worth trying ttomas's suggestion. The Wayland problem is about locating the new window in the correct place (it will not do so), generally, I think Wayland gets the size right. So, try undocked ? If that fixes your issue, it might be worth a Lazarus bug report.
Next, try changing your Desktop. With the various DEs slowly (but too fast) switching to Wayland they exposing its many, many shortcoming but its not all the same. So, sounds like you like a slow, user unfriendly DE, (eg Gnome), maybe try KDE ? Or if you want to be Wayland free, try Mate, it just works.
Davo