No errors in console or warnings.
PlayerInteractEvent is not fired on right click air or right click blocks. This seems to be occuring in the newer versions of spigot. No events are being cancelled/are cancelling another event in the plugins I have tested this issue with.
Way to reproduce:
Create a plugin using the player interact event that depends on a right click action.
> PlayerInteractEvent isn't called.
https://www.spigotmc.org/threads/playerinteractevent-troubles-with-event.93749 is the original issue, tested with multiple plugins after this.