Rainbow vomit glitched shots?

Playing as Rafa and had no troubles. But I have two rainbow vomits equipped and today I hopped on to farm again. For some reason my rainbow vomits will all of a sudden just shoot straight into the ground. You can see the “shell” the star come out of the barrel and land right in front of me, so I have to switch to my other vomit and sometimes both of them are glitched.