when casting a spell it sometimes show another spell being cast

[Qruisr]

This is a bug i have hade since the early days.

When i cast for ex bio II it shows that im readying to cast for ex stoneskin that i did cast earlyer, then i cast for ex banish and still show stoneskin, when it casts its the right spell but its anoying to not se if you hit the right spell at once.
This does not happen every time.

Qruisr Qar
Lindblum