Basis texture compression corrupt pixel art

[d954mas]

Describe the bug (REQUIRED)
A clear and concise description of what the bug is.
Basis texture compression corrupt pixel art.

I use basis normal. rgb and rgba. And default best rgba

It is interesting that rbg corrupt more then rgba

I use part of charactere texture 8x8 to make it bigger in screen.
But i have same artifacts on face with 128x128 full texture

To Reproduce (REQUIRED)
repro case

Expected behavior (REQUIRED)
I am not sure is it possible to not corrupt textures. But mb there is something wrong with process or mb can be some improvements.

Defold version (REQUIRED):

• Version 1.7.0

Platforms (REQUIRED):
-ALL

Minimal repro case project (OPTIONAL):
basis_corrupt_textures.zip