This is an update that adds support for 1.21.5 version of Spigot.
It also addresses various, ongoing gameplay bugs that were introduced or noticed with the last update. Hopefully, there should be no further issues.
Changes included:
Fix the issue where you cannot place blocks until teleporting when using Paper 1.21+ (if the issue persists in older versions please post about it)
Fix the errors with mismatched packets when in creative mode or picking blocks
Remove support for ProtocolLib on versions 1.21+
At this time, when using Paper, picking up the image in creative mode will yield a blank map rather than one with the image on it. This feature continues to work as it should on Spigot.