Crash on removing many annotations tables

Steps for reproduce:
1) Open any fasta and find pattern 'aaa'
Expected state: Found some regions.
2) Click 'save as annotations' and select 'Create new table' and click 'Create'
Expected state: File with annotations added to project and annotations added to sequence view and annotations tree view.
3) Repeat steps 1) and 2)
Expected state: Two annotations tables showed in annotations tree view.
4) Expand one of table and select annotations and both annotation tables and press 'Del', then try select removed annotation and programm crashed.