Tested the save with all your mods, gave 1 level/click to Straker, all ok. Some skills descriptions are messed when scroll down, but this happens in many mods.

Are you sure is about Straker? because after click end turn, the hero leveling up is Tamika, which is hidden in town. As the level up mod is poorly text detailed (uh no, I got it: russian fonts will not display in english versions), we don't know what level the hero is, and it may seem to you that is Straker who is leveling (thus basic sorcery), but is not him. Is Tamika.