Im an arial warrio and went to practice dex with the trainer in galadon. I had 4 trains.
This is what happened:

<92%hp 100%m 47%mv (25.80%)> train
sc
You have 2 training sessions.
You can train:
STR, at a cost of 726 copper.
WIS, at a cost of 726 copper.
DEX, at a cost of 841 copper.
CHA, at a cost of 649 copper.
HP, MANA, or MV at a cost of 872 copper.

Dex : quick

Then i trained once

<92%hp 100%m 47%mv (25.80%)> train
You have 1 training sessions.
You can train:
STR, at a cost of 726 copper.
WIS, at a cost of 726 copper.
DEX, at a cost of 879 copper.
CHA, at a cost of 649 copper.
HP, MANA, or MV at a cost of 872 copper.

Dex : deft

Deft means 24 or 25 in dex, right?

Then i trainned again

<92%hp 100%m 47%mv (25.80%)> train
You have 0 training sessions.
You can train:
STR, at a cost of 726 copper.
WIS, at a cost of 726 copper.
DEX, at a cost of 918 copper.
CHA, at a cost of 649 copper.
HP, MANA, or MV at a cost of 872 copper.

Dex : deft

Then i trainned again

Dex : deft

<100%hp 100%m 45%mv (25.80%)> train
You have 0 training sessions.
You can train:
STR, at a cost of 726 copper.
WIS, at a cost of 726 copper.
DEX, at a cost of 955 copper.
CHA, at a cost of 649 copper.
HP, MANA, or MV at a cost of 872 copper.

I guess the trainer was eating my trains, because i have 23 in dex, trainned 3 times, so its now at 26 and i still can train dex

Thanks for your time

Cesar