Steps to reproduce:
1. Open "samples\Genbank\sars.gb"
2. Use toolbar
3. Delete document "sars.gb"
4. Delete object "NC_004718"
Current state: UGENE crashes
Steps to reproduce:
1. Open "samples\Genbank\sars.gb"
2. Use toolbar
3. Delete document "sars.gb"
4. Delete object "NC_004718"
Current state: UGENE crashes