UGENE crashes on removing tree file

1. Open file "data/samples/CLUSTALW/COI.aln"
2. Press the "Build Tree" button on the main toolbar
3. Make sure that the "Display tree with alignment editor" button is checked
4. Press the "Build" button
Expected state: tree view appears, it's syncronized with MSA view
5. Close alignment view
6. Delete the created file with tree "data/samples/CLUSTALW/COI.nwk"
Expected state: Warning dialog appears
7. Press "No to all" button or press "Yes" and save it in some other directory
8. Make double click on "COI.aln" item in project view
Expected state: MSA view opens without tree view
Current state: UGENE crashes