I've tried in RVT 2022 and had no trouble doing this. Wich version are you using?
Hi i cannot repeat on 2023 if placing random dialogue positions around the screen, i have noted when using multiple monitors and detaching my laptop it does reset back to the Original single screen layout which I would think it is resetting the dialogues back to the interface so treey not lost on other screens.
I am seeing more and more support/help request for Dialogues/Menus being lost off screen now more than ever so it could be linked in someway?
For the last 2-3 releases i have to manually stretch my Project Brower after opening every project - i just learnt to live with it!