What is your operating system? Windows 10
What is your Shotcut version? 22.01.30
Can you repeat the problem? If so, what are the steps?
It is repeatable, but also unpredictable. I didn’t find a way to trigger the bug every time.
Just add a range to the timeline and move it around.
In the example below, the original duration is 00:00:10:01.
As I move the range, it’s duration changes to 00:00:10:00, then back to 00:00:10:01 a few times.
Near the end, it even falls down to 00:00:09:21
Video Mode is at 24fps