Scenario to reproduce:
- Open "data/samples/CLUSTALW/ty3.aln.gz".
- Open "Statistics" options panel tab.
- Check "Show distances column" option.
Expected state: a "Generate distances matrix" task is started. - Uncheck "Show distances column" option.
Expected state: a "Generate distances matrix" task is canceled.
Current state: a "Generate distances matrix" task is not canceled. I don't know how to cancel it, it is restarted again and again.