AMD 7950x, 96gb ram, RTX 4090. Windows 11. 2x 4k monitors.
It took a while to figure out what was happening but here it is.
In “Enable HiDPI” mode, when you click “Allow Window to be Resized” plugins will often resize out of the visible screen area. As far as I can tell, there is no way to get them back on screen without disabling HiDPI, restarting Cubase and repositioning. This also happens when I open and close the “Edit Instrument” on my second monitor. Seems to only happen in Cubase.