ATC Window keeps getting corrupted

My ATC window keeps messing itself up, no matter how often I fix it.

This may have to do with me running FSX on two monitors, and often shuffling the windows around (as well as resizing them), so I'm out of hope that I can get a permanent fix for this.

Are there any third party programs or utilities out there that use an alternative window (perhaps within their own application)?

I'm aware that alternative ATC programs exist, but I'm afraid they'll use the same window as FSX, so that wouldn't help much. I wouldn't mind spending some money on a better ATC, but (even though I know it's not realistic) I would like to be able to read the messages (i.e. just voice communications is not enough).