Major 1. Open document _common_data\scenarios\msa\ma2_gapped.aln
2. Insert some gaps to the first column. Ensure, that every column has a gap
3. Select Edit -> remove columns of gaps -> remove columns with number of gaps 1.
4. Click OK
Expected state: all columns are deleted(expect maybe one symbol or on column or something like that).
Found state: there are 3 columns and 5 sequences
Failed tests:
GUITest_common_scenarios_msa_editor_test_0020
GUITest_common_scenarios_msa_editor_test_0020_1
GUITest_common_scenarios_msa_editor_test_0020_2