Ability in use - Bug (created also ticket on WF site)

[AnnetteW]

Hello,
while playing Warframe i found a bug called "ability in use." Due to this bug, I can't attack in the game. Fall to void and /unstuck does not repair this and I cannot also swap to Operator, because it's "ability" too. I got this during:
Cast first ability on Mirage (school Zenurik) = this ability is "one cast" and due to "ability in use" I'm instantly bugged, because You cannot "recast" this ability until duration is 0, but ability in use is basically "duration infinite" even when You fail to use this ability. So die is the only way.

Same bug I also got on Gara with 4th ability (channeling), but when I got enough energy I could recast 4th ability, that removed this bug. But it was with school Unairu.

This led me to believe that this bug can be caused by both the "one cast" and "channeling" abilities. But when I look at the fact that the "one cast" ability does not take energy immediately, but within 1s,... it works the same way as channeling.

I'm not sure what exactly it is, but I got the same bug during Index with Excalibur Umbra. So it's probably cause when You use abilities on low energy, when this energy is taken away by game mechanics and the remaining energy does not cover the "ability cost" for your ability. (Eximus stealing energy, -1 energy per s in Index, etc.)

Hope You repair this bug.