The sub disappeared

Submitted by Rob

Assigned to Simon Steinbeiß @ochosi

Link to original bug (#11077)

Description

I played a movie with separate sub (same name, of couse). At the start everything was ok, the sub was loaded automatically, but when I tried to seek (ahead or back), the sub disappeared. I tried with different files/movies, different format, same effect.

System: Xubuntu 14.04, Parole 0.6.1., i915 drv