'Armor Training' is supposed to increase the Dexterity bonus for any armor but, it doesn't work. I have a fighter with +7 Dex. bonus wearing armor that +3, but armor training supposed to increase that to +7. However it doesn't work, I only get +3. What is more weird id if I put on an armor with lower Max Dex. bonus it is still +3. Anyone else having this problem?

I can confirm your observation, but I need to have a closer look on it.

Reason: I have tested it with two characters. With one it works as you described. With the second it works as it should be.

But since it is 2:30am and I need my beauty sleep I will check it again at some later point. ^o^

Update: could not confirm bug. Working as intended.

Please check how much stuff your character is carrying and check also if bull's strength buff change anything for you. In doubt, please share a screenshot of that character's sheet like this:

https://ibb.co/47RB04v

Thank you for trying but I figured it out it was the equipment weight that was causing it, since my fighter is DEX based she didn't have enough STR for all her equipment.

Mhm. That is what I meant with bull's strength. It would reveal any encumbarance issues.

Hmm, shouldn't there be a tooltip as well when you hoover over your Character's encumbrance categories at the bottom of the inventory screen?

There is. In some occassions it can be bugged, showing you a different value than what you actually have. It would be better if that penalty is shown in the AC calculation as well.