VLC nightly does not display subtitles in 10bit videos

I searched the bugtracker but didn't find my problem has already been reported.

I use the nightly build from https://launchpad.net/~videolan/+archive/master-daily for ubuntu 11.10 . When playing some mkv files with subtitles, the subtitles are missing. the console says

[0x2c02068] main blend error: blending RGBA to I0AL failed and [0x2c02068] main blend error: blending YUVA to I0AL failed

The Files this happens at are 10bit. I found some bugs that have the subtitles displayed as wrong colors but they are not at all being displayed for me.

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