1/13 Update -- We can confirm that this fix is still committed to the January 2.5 update, and we hope to have it resolved at that time!
Description: After our 2.0 Update, users noted that casting songs quickly while under the effects of the Rhythm buff caused some songs to stop channeling correctly.
Status: (Updated 12/15) -- XL has been able to reproduce the issue on their side and have currently placed the fix in development for 2.5, which will be deployed in late January.