As you may know blockland is experienceing many various glitchs and to a lesser extent add-on failures here is a list of what i have discovered:
-Add-On failures-
Duplicator: No longer duplicates events
Locked projectiles: No longer fires, at all
-Glitchs-
Random background anomolies: im sure you have gotten them
Explodeing Vehicals: upon leaveing or switching spots in the vehical causes it to explode
Right click fire failure: useing the MP7 or Flak Cannon's right click to fire another bullet doesnt work, at all.
chances are there are many more glitchs or failures of specific add-ons that i have not experienced yet, and hopefully v12 will fix most of them.