Hmm, I've never heard of this bug. If you have your game patched to the most current version, then I suppose it could just be probability.
Both of those spells have only a percent chance of inflicting burning or poisoning. I'm not sure how many times you tested, but give each at least a dozen tries - if they still don't activate, then it sounds like a bug.
Also, if you have a save from before you chose Higher Magic, load that save and see if the spells cause burning/poisoning. Then (using the same save) select Higher Magic and test the spells. What you're experiencing may be related to Higher Magic, or it could be something else entirely.
Sorry I couldn't be more help - never ran into that one myself. Good luck.
|