TextMeshPro: Different outline size in some characters. How to fix it?

Hi!

I've been struggling with outline size for our game. With this font, I've noticed that for some characters, the outline size is bigger than for the rest of the characters. (If I put thickness to 0, it doesn't show any outline, it's like its 3x or 4x the size that I choose). I've looked into the font file and everything seems correct. Any clues that what can be happening?

Thanks a lot!

I attached two pictures (one with the outline configuration, the other of the TextMeshProUGUI gameobject where you can see the different outline sizes).