AUv3 plugin editor window shows blank (white) when reopened in Ableton Live 12

[ring2]

I’m running into an issue with AUv3 plugins created using the Projucer template.

When loading such a plugin in Ableton Live 12, the plugin’s editor window displays correctly the first time. However, if the editor window is closed and then reopened, it appears completely blank (just white) and none of the components are rendered.

Repro steps:

1. Launch Ableton Live 12 and insert an instance of the AUv3 plugin made with JUCE/Projucer

2. The plugin editor window opens automatically, showing all components correctly

3. Close the plugin editor window

4. Reopen the plugin editor window

Expected:

The editor window should show the plugin’s components properly.

Actual:

The editor window is blank (white), and no components are visible.

This behavior occurs with AUv3 plugins created from the Projucer template. Additionally, I tested some AUv3-enabled free apps available on the App Store, and I confirmed the same issue with GigFast Lite and DimChorus (although I don’t know if these apps are built with JUCE).

The attached screenshots shows a plugin exported by Projucer (8.0.9), just build it as AUv3 plugin. It should show “Hello World” in grey background but white when reopened the plugin editor window.

Thanks,
Masanao

[modosc]

see this thread for a discussion and a patch that sort of works.

[ring2]

Thanks! The suggested patch v2 worked for me!