VST3 plugin editor resizing glitch/issues

Windows
41

The question is a bit vague, so I’m not sure exactly which issue you’re asking about.

Testing in the AudioPluginDemo VST3 on Windows 11 with 125% display scaling:
In REAPER 6.68, Cubase 12, FL 20, and Live 11.2, resizing a VST3 editor works correctly, both from the internal corner resizer, and from the host’s window border. TextEditor editing also works as expected. Closing and opening the editor preserves its size.

42

The stress test I usually had problems with: set up a multi screen environment where the different screens have different scalings, then move the plugin window back and forth between those.

Haven’t looked into it again, but that tended to produce issues like scaling ratios getting stuck or window bounds not resized properly rather often.