Bowser Jr. does an immediate double jump after attempting to jump-cancel grounded Side Special during spinout

[cynidea]

This bug interferes with the ability to buffer airdodge, and thus preventing a wavedash out of Koopa Car.

2024-08-26.01-03-34.mp4

Steps to replicate:

1. Start side special
2. Tilt the control stick back, starting a spin-out
3. Input jump

The result is that Bowser Jr. is immediately already in the air upon cancel; thus when the jump is registered, it becomes a mid-air jump instead of a grounded jump.

2024-08-26.01-03-48.mp4

Found in v0.46.1-beta; unsure if this was present in earlier versions.