recently I've wanted to test out the Texture Paint Mode on Blender with some simple model (low poly stuff). I've been able to correctly (I assume) UV unwrap -manually and smart unwrap- my model to prepare it for texture painting. However when actually painting the model I've noticed some issues, whether trying to paint with a brush tool or the fill tool, some very small areas of faces of the model, whether having Face Selection Masking enabled or not, could not be painted:
I'm currently trying to paint on a 512x512 texture (don't know if the size matter) but, when trying to solve this problem, even with a resolution of 4096x4096 this problem still occurs, although it is less visible. I've also tried to mess around with the Bleed value by increasing it a little bit (from 2px-4px to 8px), and when I did that I noticed something else:
It seems that the "paint" is being applied with some rotation to it, and I don't think this is the expect result, so this might be the source of my problem.