Wrong castouts spells in the SE. Help to resolve the bug. (The Elder Scrolls 5: Skyrim)

Play Skyrim SE. Recently installed a few mods, then there is such a bug: in the stealth mode, the character raises his hands by casting spells with the result that they sometimes did not fly there in the form of 3 persons. Make screenshots, please note on the left hand.

On a single screen - charged spell in the standing position (the arm is lifted, everything is as it should be) and the other in the stealth mode (the spell charged in his fist, and fly to the floor). If you do the same at home, you will understand that the position of stealth hands should also be raised with a loaded spell.

Kapets I scribbled a lot... Well hope you can help me to fix this unpleasant nuance.
And Yes, I'm NOT sure I blame fashion, late notice. And download save to these problems is also not possible, because they disappeared after installing mods.
In General, I'm a terrible noob and nichrome not understand this, so help, please.