Certain artifacts become unusable

Power Shaker and Fighting Fungus will sometimes become completely unusable during combat. Their cooldown has finished and I have enough Souls available, but attempting to use them only plays the unavailable/cooldown sound.

I've experienced this with both artifacts independently, so having both equipped at the same time is not required.

Testing / Observations

I haven't been able to isolate the exact cause. However, repeatedly using/spamming either artifact while fighting mobs seems to trigger the bug very consistently, often within about 30 seconds.

Once the bug occurs:

• The cooldown is completely finished.

• I have enough Souls to activate the artifact.

• The artifact still produces the unavailable/cooldown sound and won't activate.

Expected Result

The artifact should be usable when its cooldown has finished and enough Souls are available.

Workaround

The artifact starts working again after dying and respawning, unequipping and re-equipping it, or rejoining the game.

I have attached 2 videos demonstrating the issue.