Crash when attempting to put a bag inside a bag

[Pudge]

Hi, just got summoned and given a shitload of stuff for the PVP event. Starting clicking it all into a bag real fast to see what all i got. got to a bag on my cursor, and i clicked it to place it inside the other bag (wasnt paying too much attention). game froze up and booted me

[Sunderfury]

Resolving due to age and lack of details on items to try reproducing.