Chroma (VST3) in Reaper7: UI zooms-out progressively when switching to single mode

[tmart]

I'm having trouble with the UI in the VST3 Chroma plugin on a Mac, using Reaper. I'm still running the demo.

Versions
I'm running Reaper 7 latest (presently 7.16) on Mac M1 Sonoma 14.5.
Chroma version is latest at this time: 1.0.9 build 99. (Demo)

Problem Statement
There are several aspects of the problem; here is the behavior that I think I've been able to understand:

1. Every time the VST3 UI loads the single-mode Chroma layout, the zoom level changes (reduces) until the UI is too small to be usable. I can reset back to 100% by typing the Chroma hotkey "0" ... but each successive time that the UI changes to single mode, the zoom level gets progressively smaller. The zoom doesn't change as I move from preset-to-preset unless the preset changes from a dual mode to a single mode Chroma configuration.

2. Removing the VST3 plugin instance and adding a new VST3 Chroma plugin instance does not honor the last zoom level of the last VST3 Chroma instance.

3. Removing the VST3 Chroma plugin and adding an AU Chroma, changing the zoom level (e.g. 100%) within the AU plugin, then removing the AU plugin and adding a new VST3 Chroma does honor the last zoom level that the AU Chroma instance had; however, problem aspect "1." above still happens in the VST3 Chroma: changing to single-mode from dual-mode will progressively decrease the zoom level.

Some other hints:
[*]The issue does not appear to happen when switching Chroma modes from dual to single while in the AU (Apple) Chroma plugin.
[*]The issue does not appear to happen in the standalone Chroma application on the same Mac.
[*]The issue does not appear to happen in VST3 using Ableton (12). So far I've only observed the problem in Reaper.

[cherryaudio Greg]

Hi,

Thanks for the detailed report! This is a known issue with Reaper. For now, you can just avoid using the VST3 version of Chroma in Reaper.

Greg

[tmart]

Thanks for your response and the guidance, Greg.