The game can go out of sync and populate an error when a player is quickly power crafting, power promoting, or raiding, etc. The active stamina bank (at the top of the main game screen) will show that the player will have more stamina in their bank than what they really have, when the game is out of sync. So after the error, the game is re-synced, and the stamina amount is corrected to the correct amount and this will show a less amount since the game was still catching up on charging all the stamina for the crafting, etc.