Our stacking scripts apparently only deal with ability score stacking. This needs to be fixed. As of right now, the following are not dealt with properly:

• AC stacking (works in some cases?).
• Skill stacking.

Still an issue.

Still an issue.

Skill stacking is acceptable.

General AC stacking works properly.

Armor AC stacking will be fixed shortly.

At long last, this should all be working as expected. Skills stack, and AC does not, as of v588.