If you look at this image closely, you will see that my splitter went right through the bumper. This is clearly because it split right before/inside of bumper. If it does this with normal splitter, it no doubt does the same thing with the upgrades, and maybe napalm as well (due to its type of shot). I really hope this can be fixed, but if not it's not a big deal due to how likely it is to occur. Just thought I'd bring this to everyone (and kChamp)'s attention
Probably splitter splitted at the time when it touched the bumper resulting in the the one that split glitched through the bumper
Two projectiles are emitted from the base projectile, as far as I know. In this case, looks like they emitted past the bumper. Similar things happen with similar weapons like cactus, fireworks, etc. You get an interesting result if it happens on a circular bumper (at a certain angle); it keeps hitting the bumper until it reaches the max amount of bounces.
same with portals it can happend that the main shot goes in it but then rigth after when it splits it returns back,however i'm agree it should be fixed in some ways