I’m seeing a brief white flash when closing plugin windows in Renoise 3.5.0 on macOS 15.5 (Sequoia). This happens with multiple VST3 plugins (tested UVI Falcon and Cherry Audio DCO-106), and appears regardless of sandboxing or Metal settings.
The issue seems to occur just as the plugin window is closed — a single frame of white before returning to Renoise’s UI. It does not happen in Logic Pro or Ableton Live, which also use Metal on macOS.
This could be related to how Renoise composites plugin windows or manages GPU draw calls.
While this may seem minor, it can have an outsized impact on accessibility — particularly for neurodivergent users or those with sensory sensitivity, where sudden visual flashes or visual instability can be uncomfortable or even triggering.
Here’s a short video demo of the issue:
System:
– Mac mini M2 Pro
– macOS 15.5
– Renoise 3.5.0
Let me know if I can provide logs or test anything further.