100% repeatable in 15.0.30:
I create a sampler track, drag in a sample from media bay and everything works fine. Then I try to drag in a different sample from media bay and the waveform view shows a flat line (or maybe nothing - I can’t really tell), the background where the waveform was is much darker and the controls at the loop start no longer work. However, the new sample plays back like it should and everything else works.
So… what am I doing wrong?