Min/Max Angle Not working after setup

I am using IK legs to nail the feet during a walk cycle, however after I setup the min/max angle for the knees they still bend past the set angles. Any ideas on this issue? I am using Harmony Standalone on a Mac.

You are posting this in the wrong forum. In any case this question requires more details such as…

Where are you adding the IK, the element or the pegs?
Have you checked “IK nail for Children” on the
Advanced tab of the parent peg of the knees or legs?