Closely related to task T340

If you have a weapon that is capable of running out of power after a period of shooting you can experience this issue. If you run out of power you get a power failure event, which decreases/stops your power regen for a short moment. If you hold your mouse button down, you'll stay in power failure and your power regen will be very low.

It only happens when you try to fire a weapon that would not have enough power to fire all of its groups, this also triggers if it is reloading.
The issue here is that it happens even when the weapon is reloading and that your power regen stays in power failure if you hold down your mouse button

This issue also applies on power inheriting. If your turret barrel runs out of power capacity, it switches over to the power capacity of the turret base. The regen of the turret barrel is however kept in "power failure" mode, at least if the player is holding the left mouse button.
AI manages it better but it's clear that it constantly suffers from short power outages.