Windows VST3 High-DPI Ableton 10/11: When "Auto-Scale Plug-In Window" is turned off, the plugin is drawn out of bounds

[janhase88]

Describe the bug
When "Auto-Scale Plug-In Window" is turned off in Ableton and Windows DisplayScaling > 100%, the plugin is drawn out of bounds.
Additional observations:

• When using the Corner-Resizer - after a few resizes, the GUI gets drawn correctly.
• Once the GUI has been drawn correctly, the plugin can be deleted from a track and then on reload the GUI is still correct.
• This affects SKIA and NANOVG

To Reproduce
Build IPlugEffect.vst3, start Ableton 10 or 11, and find IPlugEffect in the left "File-Explorer" panel. Then right-click on the plugin and uncheck "Auto-Scale Plug-In Window". Now load the plugin into a track - the GUI should be drawn out of bounds.

tested in:

• Ableton Live 11 Trial (11.3.20 Build: 2023-12-15_8af48f34f5)
• Ableton Live 11 Trial (11.2.10 Build: 2023-02-01_a70e3f18ac)
• Ableton Live 10 Suite (10.1.41 Build: 2021-08-09 2398148aa8)

Expected behavior
GUI gets drawn correctly

Screenshots

2024-01-24-20-16-25.mp4

IMPORTANT DETAILS

• VST3
• Windows with DisplayScaling > 100%
• Ableton with "Auto-Scale Plug-In Window" disabled
• SKIA and NANOVG

Additional context
Why turn off "Auto-Scale Plug-In Window" in Ableton?
Turning on "Auto-Scale Plug-In Window" in Ableton causes GUI blurriness with Windows Display-Scaling above 100%, as the plug-in interface, originally drawn at a smaller scale, gets upscaled and loses sharpness. Disabling this setting maintains GUI clarity regardless of display scaling.

Related Issues

#769 : VST3 in Ableton Live 10 & 11 creates wrong Editor Window size on initial construction

[olilarkin]

please submit a bug report here