Broken PDF rendering

[Benko111]

Hi there, I'm not sure if you're aware of the bugged up PDF rendering when using s
/end to file or export feature. It never really worked well on my phone. I made some screenshots to demonstrate the problem:

This is what an exported PDF file looks like when opened with any PDF viewer, in this case Xodo:

Right, now zooming in a lot or using fit to page it looks readable:

Maybe printing generates a proper PDF file, here my print output:

Any chance of fixing that?
Thanks for your prlcious work.