- 
    Bug 
- 
    Resolution: Unresolved
- 
    P3: Somewhat important 
- 
    None
- 
    Qt Creator 4.3.1, Qt Creator 4.4.0
- 
    None
Refer to a screencast: QtCreator_bug_blockSelection.webm
Steps to reproduce:
- Ctrl+Alt+Shift and select text rectangle.
- Do a split (Ctrl+Alt+3).
- In another split part move text cursor upper and try to insert/remove few lines.
- As a result you can see that your block selection slides up/down accordingly, but actually selected text changes.