(Not sure if it is a bug or it’s just gonna stay that way.)
This is kind of a turn off for me.
I was making the texture a invisible layer so that the skin shows darker than the other part of it and for some reason it doesn’t let the color show nor the texture under it.
Yeah alpha is rendered as black 
I found this before mesh uploading was a thing when I tried to make invisible areas in retextures
Hi! We are catching up on some historical bugs and I was not able to reproduce this issue. If this issue still exists, could you please file a new bug report and include a reproduction file? Thank you!