Scenario to reproduce:
- Open "data/samples/FASTA/human_T1.fa".
- Toggle a Circular View for the sequence.
- Find some restriction sites.
- Select any restriction site in the "Restriction Sites Map" widget.
- Remove a part of the sequence that contains the selected site.
Expected state: the sequence is modified, enzymes list is updated.
Current state: UGENE sometimes crashes on this operation.
If you can't reproduce the crash try to repeat the scenario several times.