Crash in DotPlot with closing sequence

Scenario to reproduce:
1) Open murine.gb and sars.gb
2) Click on toolbar 'Build dotplot' button
3) In opened dialog click 'OK' button
4) Click on first sequence view on annotation
Expected state: showed horisontal or vertical selection on DotPlot
5) In second sequence click on 'Toggle view' and select 'Remove sequence'
Current state: program crashed
Expected state: DotPlot closed and program not crashed.

For more info see: https://ugene.unipro.ru/ugenecrashes?id=5220