I've observed that the transmute magic upgrade for dispel doesn't work. Or rather, dispel always seems to use the strengthened veil upgrade regardless of your choice. I can verify this using tactical view, dispelled enemies have the strengthened veil debuff.
Also, I noticed that my companions occasionally stop attacking, other than a few specific abilities. Anyone else facing these bugs?
For the second problem, yes, you are the second person to mention it. Have you done JoH recenlty? I think JoH isn't actually related, but see for yourself:
http://forum.bioware...-my-companions/
For the first problem, first I've heard of it, but it's entirely possible, particularly if you upgraded/patched mid-game. There have been reports that save-games that were started on an earlier patch and were upgraded exhibited weird problems with toggled upgrades.
If you started from the same patch level, it might just be a straight-up bug that nobody has noticed yet.