[v1.00 RC1 build 803] problem with custom subtitles position

[Juggalo]

When I choose subtitles -> custom position in fullscreen, the "Subtitle Sample" lines do not properly move along with the mouse. It seems as if the y-position is moving relatively to the bottom of the movie currently playing, instead of relative to the bottom of the screen (as it should).

Check it out with a movie that has like half the vertical resolution of the screen (desktop), play it fullscreen (no pan-scan or stretching, so you have big black borders at the top and bottom) and give the subtitles a custom position, you'll see what I mean.