I used a mana pot and cast a beacon. I crashed a few seconds later, and after logging back in when I went to jump to my beacon, it wasn't there, but I still had one less mana pot and an empty mana bar.
Edited by Wolfstorm (June 18, 2012 17:32:12)
The server didn't register the beacon before crashing. You're SOL on the pot. Happens occasionally.