Warfare skill stuck

Hello. I’m playing 1.8.1 version on PC. I’ve noticed that my warfare skill has stuck on level 17 with 8 percent. Has anybody else faced this bug? Is there any way to fix it?

Same im at 19 with 90%

It’s not a bug exactly, but probably polearms, a hidden skill, isn’t maxed out. It’s been like that for a while.