An update, I have another possible culprit for what could be causing these bugs, alongside some others. I'm starting to think that the top platform of vertical ramps is being collided with at times. This is because alongside the two bugs mentioned before, I've also had bugs such as
- A combo being performed only for the points to be indicated as just an ollie with no more than 1400 points upon landing. (Seemingly due to the game registering landing down from one platform onto another)
- Rare instances of bouncing off the top of the ramp on landing. Even getting stuck at the top upon performing a manual when landing.