What Sombre said,
"It appears that #custommagic and #magicskill don't work or have been changed somehow by the new patch. No modded magic users or priests have any paths. Holy, blood, 100% FEW random, doesn't matter - none of it shows up any more."
In my case, I used #magicskill and tried to tweak with #magicboost. No magic shows up. Enabling and disabling mod as I mentioned works.
Someone did mention about an absolute numeric limitation on #magicskill.
Magic path limitation