Fix a deadlock situation introduced via bug 241244 commit
1904f477320dac4a9f4d45f7be478efba4a0b735.

If a job code wants to handle a status in a "blocking" way, submit an
async task for UI thread to avoid deadlocks.

Change-Id: I3d86408fefd324db41ab87494ed98f62d05131c9
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>