Sync layout seems undesired here as the sync layout is wrapped in a job.
We can do better here with async layout.
Also the job is not needed, which can be avoided if we simply mark it
for repaint.

Change-Id: I551d333645d93a20ff8b5ac27ee5d29005c21eb2
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>