Reproduction steps:

1. Create new project
2. Enable Services and Collab
3. Make the first commit, with a message containing one or more characters at first, then enter and some characters after that
4. Open Collab History window

Expected result: beginning of the commit message with ellipsis where it should wrap to the new line
What happens: no ellipsis, top of the symbols in the new line visible

Not reproduced on: 5.6.0a2
Reproduced on: 5.6.0a3, 5.6.0b11, 2017.1.0a4
Regression introduced on: 5.6.0a3