Possible race condition in the trace view
This is not easily reproducible (or I don't know how to reproduce it): the Y-Axis in the trace view is not fully painted.
It looks like this only happens with large traces.
Also, some trace lines don't make sense. From the snapshot below, the dark blue line disappears if we zoom in the traces.
Worst case: when clicking the undo button very quickly, the traces are painted partially:
Edited by Laksono Adhianto