Sclerite Karka Shell bug
It’s been around for a long time and affects all back slot items when you use a transformation (happens most often with ride the lightning for me). The backpack reappears when your character puts its weapons away.
“We recognize that the changes to [ele] will essentially remove it from play. In the future,
we may consider whether or not there is an incarnation of [ele] that would be viable
but balanced. For now, we do not expect it to see serious use.” – ANet
we may consider whether or not there is an incarnation of [ele] that would be viable
but balanced. For now, we do not expect it to see serious use.” – ANet