Crash if click on the element in the result table, but the Annotation table'h been removed

Scenario:

1. Open the attached file. 
2. Set "Minimum melting temperature" to 51.
   Expected: some results have appeared in the results table and in the Annotation Tree View.
3. Remove the Annotation table from the Annotation Tree View.
4. Click on any result in the result table.
   Current: UGENE's been crashed.