Crop borders not adjusting

When I pull the crop borders on the Preview, sometimes the red square on the right or left doesn't move, but the values change. Strangely, when I pull the right side, the left side resets. Is this some kind of bug or what is happening? I have Preview at 100% with "Correct for Pixel Aspect Ratio" checked.

Thanks,
HL

I can't reproduce this. What version of Compressor are you using and which setting did you choose?

My software:
Pro Maintenance Tools - Tools to keep Final Cut Studio, Final Cut Pro X, Avid Media Composer and Adobe Premiere Pro running smoothly and fix problems when they arise
Pro Media Tools - Edit QuickTime chapters and metadata, detect gamma shifts, edit markers, watch renders and more
More tools...

Compressor v3.5.3

I guess after dropping in the video, then the Mpeg2 preset, I should click on the preset again, making sure its highlighted. If I don't, then the crop borders don't seem to adjust and reset if I do more than one side.