Most likely the emitter fix.
There is a bug where particle emitters stop:----This is due to a fix for a crash where particles would keep going after you disconnected and do bad things. It is trigger whenever anyone leaves the server. This has been fixed for v15.
This is usually how it goes.6 months before a huge update.1 month before next version containing bug fixes.
Badspot is adding an option to toggle whether or not you want to host using UPnP.
To stop the particle glitch, just Self Delete. Works for me.
the v3 limbs maybe?