Affects Version/s: None
Fix Version/s: None
How to reproduce:
1) Select multiple sequences with left mouse button pressed
Expected behavior: the sequences under the selected area are selected after mouse release
Current behavior: the range of sequences from 0 to the 'mouse-release' one are selected.
2) Click to the empty area outside of any sequence (below list of sequences)
Expected behavior: nothing changes.
Current behavior: the last sequence in the list becomes selected.