There is a graphical glitch at the end of the spell's animation in 3rd Person (looking over the shoulder) view
I have installed the mod, Magic Diversity (http://www.nexusmods.com/morrowind/mods/43380/?tab=4&&navtag=http%3A%2F%2Fwww.nexusmods.com%2Fmorrowind%2Fajax%2Fcomments%2F%3Fmod_id%3D43380%26page%3D1%26sort%3DDESC%26pid%3D0%26thread_id%3D2382974&pUp=1) on a vanilla Morrowind install running 0.34 build on Windows 7.
When in third person (over the shoulder view), there is a perceptible shudder when the animation concludes that is visible only in Open MW. This is not present in Morrowind. I have seen the glitch with all the spells I have tried with my new Mage character, Chameleon, Hearth Heal and Sanctuary.
(RM-2293 from redmine: created on 2015-01-22 by Rob Wilson, , closed on 2015-01-22 by scrawl .)