wrong background scroll speed when playing the main game after 1 midway practice

medium enemies spawn during midboss (may be caused by a bomb?) (https://drive.google.com/file/d/1TRlaxt1ppeHNteM4rwzUvawMS9wNxkow/view?usp=shari... replay file with said bug if it helps)

pressing special while holding shot won't let you shoot special but still uses 20% of sp gauge