Git: Interleaved output lines after interactive rebase

The following lines two lines:

Rebasing (3/3)
Sucessfully rebased and updated refs/heads/master. 

appear in one line:

Rebasing (3/3) Sucessfully rebased and updated refs/heads/master. 

and the second part is red, which indicates it comes from standard error output.

This has not been the case in Creator 4.8, which just displayed (in red):

Sucessfully rebased and updated refs/heads/master.

This seems to be introduced by the new CR handling in Creator 4.9