Ever since the Thieves guild bug, Entropy and its morphs as well as Shield Charge and its morphs are suffering the same bug. This bug causes the play to involuntarily sheathe their weapons in the middle of combat, often skipping animations to do so. The bug is triggered by certain circumstances so It's easy to make it happen almost 100% of the time.
It triggers as long as Entropy (I use the Degeneration morph) or Shield Bash (I use Shielded Assault) are used as the first attack in combat and only if the enemy isn't already attacking you. The first hit in combat while stealthed in the perfect example. The spell or ability still worked but instantly the character sheathes their weapons. It looks especially bad when Shielded Assault connects but the character is running up to the enemy with their weapons put up and then stops right in front of them. Obviously the charge animation is overridden due to this bug.
Since you like to see video, here's examples of Degeneration causing me to sheath my weapons. Key: watch the first strike!
plays.tv/s/KmCM7onAvxviplays.tv/s/KmCMGVS6xKnBplays.tv/s/KmCLrOyBAWbu
"When in doubt, kill it with fire."