Hi,
simple to reproduce:
- create project with at least 2 audio tracks
- add any audio to one track , ie. from the Mediabay library (drag one sample to track one)
- drag & drop the audio part to the sample editor in the lower zone
the sample will show up for a very short moment in the sample editor area then the screen will show up again as a blank zone telling you to add any a sample, while a sample track was created and activated
click anywhere else and come back to either the sample track in the project window or the lower zone
the sample etc. will be displayed correctly