Thank you for playing the Arcade mode update!
Here's a small patch to fix a few things based on player feedback:

ENDLESS ENCORE

• Tentacles can now take damage during Ina's fight (not just Ina)
  
• Added invincibility frames when forced to switch character
  
• Fixed a bug where music would stop when forced to switch character
  
• Fixed a bug where time would be deleted at the start of some bosses (King Crimson style)