Line break not visible on multimeasure rest

Steps:
1- Create a score with 3 empty measures and insert notes in the 4th measure;
2- Enable multimeasure rests;
3- Drag a Line Break to the multimeasure rest.
Result:
The staff breaks after the multimeasure rest as expected, but the Line Break icon is not visible.

Addendum:
- By clicking in the position where the Line Break icon would be it is possible to select the Line Break (which can then be deleted).
- If the "ghost" Line Break is selected as in the previous point and its visibility is toggled a crash occurs (sometimes).

Windows 8.1, commit e2eb0cb