I don't think my problem is related to yours Goober. It's very reproducible. I've tried rebooting my computer and clearing the cache. I don't have another pilot file to try that's completed the campaign, but I'd be happy to try someone else's. I tried colliding with everything in the first three missions of the campaign, but so far they all collide. I'm not sure what else to do to isolate this.
It isn't that the ships are set no-collide or anything, weapons fire hits just fine, I can just fly through them. I can also fly through my wingmen in that mission.
The attached log is from RC7 because I forgot to download the debug build of RC8. I don't see anything, but perhaps someone else will.
[attachment removed and sold on the black market]