SAFE_POINT on deleting read in Sanger database

Scenario:

1. Open "_common_data/sanger/alignment.ugenedb".
2. Select read  "SZYD_Cas9_5B70".
3. Press the Delete key.
   Actual result: a SAFE_POINT is triggered.

   Trying to recover from error: Internal error: unexpected row index was passed to
    MAlignmnet::getRow at src\datatype\msa\MultipleAlignment.cpp:216
   Assertion failed: rowIndex >= 0 && (rowIndex < rowsCount), file src\datatype\msa
   \MultipleAlignment.cpp, line 216
   

Affected test:
GUITest_regression_scenarios_test_5758