Well I was gardening and decided to refill my energy, but when I click on the refill button nothing happened. So I thought I was lagging or disconnecting. However, I soon realized I wasn't lagging or disconnecting after some testing of setting objects and using other functions. I tried using the refill energy button in the character menu after leaving my house, but that also did not display the screen that it is suppose to. Also, it locks my character in place so that they can not move and disables teleporting like what would normally happen when the screen pops up.
My only recourse locked up like this is to log out and back in. This unlocks me, however, repeated attempts to refill energy have resulted in the exact same problem.
I just now decided to try buying the energy elixir from the shop and that DID work. Could this have anything to do with the birthday bonuses; the refill energy elixir was highlighted. I doubt it was intentional for the refill buttons to act this way during this time so I'm going to say this is a bug.