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If I play MKV files and try to display subtitles (microdvd sub format), then occasionally the subtitles get cut so that characters from the beginning and end of the line are missing or shown only in half. This seems to only occur if there are two lines of subtitles and it seems to always concern the upper line. This happens in all MKV files that I have. If I try to use the same subtitle on a file of some other video format (i.e. XVID), it displays correctly. I've tried different subtitle settings, font size etc. but those have no effect.