Black images when exporting to PDF

I have trouble when exporting to PDF or printing a LO Writer document with some images on it. Images appear completely black.
I’m using Libreoffice 6.0.1-1 with OpenGL disabled (somehow if I enable it the interface flickers a lot).

I’m using Arch Linux with KDE Plasma 5.12.2 in an ASUS laptop with an optimus NVidia card (but I have bumblebee installed so the Intel card should be working).

I’ve seen in other threads that this could be caused by OpenGL, but I have it disabled and the other posts mostly refer to Windows. I was wondering if anyone else has had a similar problem.

Yes, I had this same issue just today. I’m running LO 6.0.2 on Linux Mint 18.3 with Intel integrated graphics. It’s definitely a bug, probably not OpenGL.

Here’s a workaround that worked for me: Pdf image background looses colour