I have only seen this issue in a locked thread that was never answered, so I'm posting here hoping someone can help. When dragging a tab from Opera GX from one monitor to another, sometimes it will give me fullscreen and sometimes it will be windowed. I would like it to be fullscreen, or at least have some kind of gesture or option I can set to easily make it fullscreen without double clicking it or pressing maximize afterwards. The behavior is very buggy and inconsistent because no matter how I drag it (to the top, sides, or middle. quickly or slowly, etc.) I will get a fullscreen tab or a windowed one seemingly at random. Sometimes it seems to remember that I want it to go fullscreen and will keep doing that, however it never seems to remember it permanently because this has been happening since I installed the browser months ago.
OS: Windows 10 Home
Opera GX Version: LVL 2 (core: 71.0.3770.234)
Steps to Reproduce: Open Opera GX > Open a new tab > Drag the tab onto a new monitor > Fullscreen behavior is inconsistent
Expected Behavior: The new window should fullscreen