We had some memory-related bugs recently, across different projects and on different graphics cards. There is something going wrong in the moment the node generates the font textures and thus the font is rendered with lines. The lines are in the texture of the letters because you can see how they repeat.
Most of the time the problem is gone after restarting the patch.
On a Intel HD 4200 and HD 4600, the error is quite reproduceable, it depends on when the text (advanced) is first used, if other assets are loaded in the ram before, the text rendering will be distorted. But the graphics RAM usage of our project is never over 250MB, so it’s not out of RAM. I had the same Problem not reproduceable on a GeForce GTX1060 and a decent FirePro, too.
Screenshot Project 1 on a Intel HD 4600:
Yes this is the same error.
I fixed this by changing the Sheet Mip Levels on the Text Settings node from 0 to 1 to 0 at the start.
Basically every change on the Text Settings node eliminated the error.