Waveform not always visible

All my patches in MainStage have 1 Playback plugin. For most of them I can see the waveform of the Playback track in Perform mode, but for some I can't. This also looks like a random thing, because when I close and open MainStage again I get different patches with invisible waveforms.

So, the Playback tracks are always audible, which is good of course, but the waveforms are randomly visible.

Anyone a solution ?

My setup:

MacBook Air M2

RAM 16 GB

macOS Sequoia 15.3

MainStage 3.7