Couldn't see a post for this since the new beta, and couldn't find anything on the posted feedback bugs, so I just figured I'd mention it.
The auto-fill function for creating matches seems to jam fairly often. When working right, it'll fill up all the empty slots with CPU characters, but sometimes it will only fill up one or two slots. The remaining slots, I can't even fill them up manually, since no matter what I select from the drop-down list, it ignores it. Exiting out of the match-creation screen doesn't fix this, nor does going right back to the title screen. Exiting the entire program seems to usually fix it, although not always.
Can't figure out any pattern to this happening, since sometimes it'll happen on the very first match I try to create since opening the game, but other times, I'll go through several matches without it happened, but then it suddenly appears.