Comment # 3 on bug 1173712 from Fabian Vogt

(In reply to Steffen Winterfeldt from comment #2)
> This looks a bit like bug 1172870 that got fixed in TW.
> 
> Could you re-check there?

Instead of doing that on plain TW, I applied the diff as a hotpatch to 15.2 and
it appears to work. Can it be backported?