Icestorm keeps binding to left click

Whenever I move to a new zone, icestorm gets rebound to left click, I have it bound to mouse button 4, but it unbinds that as well. I haven't had this problem with any other skill, though this is from the only item I have that has 2 skills on it.
Bug Report ID: #1751950702
Last bumped on Jan 7, 2026, 6:54:51 AM
Small update, I now have an unborn lich ravenous staff with 2 skills as well, and the second skill acts the same exact way as the icestorm where it gets rebound to left click or the left most empty hotbar slot.
My Icestorm keeps unbinding on zone change.
Bug Report ID: #2950611748
I bought another staff and it behaves differently. Icestorm bind is remembered on keyboard, but gets reset on zone change while playing on gamepad. I've found a workaround: I filled all other empty slots with other skills and now Icestorm stays in the chosen gamepad bind regardless of zone change.

Bug Report ID: #4073408484

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