We have a test project that was saved a long time ago (built with Juce 5/6) with our VST3 plugin.
Since then we updated the plugin (same name and params) and now using 7.0.2.
Now when we load the sample project it finds loads the updated plugin but only paints the UI once (in addAndMakeVisible) then seems to lock the UI and it becomes unresponsive.
Moving sliders on the UI does automate the parameter in Ableton, we just get no update from the plugin UI.
In this condition the sliders paint function is not called.
If we close the plugin GUI then reopen GUI (spanner) it work again.
If we remove the plugin and adding new it works across successive closing and opening of the project.
Questions:
We just want to understand what could be root cause? - I tried debugging message thread but got quite lost.
Any thoughts on if this is expected? I dont understand what data could be held within Ableton project that could cause UI lockup… we commented out all code within set and get/setStateInformation.
We dont want to move forward until we understand this issue… any thoughts appreciated…