Description:
Some characters visible in a document disappear when it is printed, and seem to be hidden when it is exported into PDF, though they are still visible in print preview and are in the PDF file.

Steps to Reproduce:
1.In LibreOffice for Fedora 32 workstation 64 bits, open a new document (either Writer, Calc, Drawing, Presentation, Formula, HTML, XML or Business card).
2.Copy the character "Motor scooter" Unicode AF6F5 from your character manager and paste it into the LibreOffice document,
3.Choose File→Export as→Export directly as PDF (or, for the components where such an option doesn't exist, "Export as PDF"→ "Export", without modifying the default options).
4.Open the PDF document with LO Drawing, with GIMP and with Evince, and print it on Samsung Xpress M2070.

Actual Results:
The scooter appears in Drawing, but not in Gimp, Evince nor on the paper.

Expected Results:
The scooter should appear on all outputs.


Reproducible: Always


User Profile Reset: Yes


OpenGL enabled: Yes

Additional Info:
It seems the character is not converted into an image, so that the applications relying on pictures don't show it.

$ sudo glxinfo | grep OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 2000 (SNB GT1)
OpenGL core profile version string: 3.3 (Core Profile) Mesa 20.1.2
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 20.1.2
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 20.1.2
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00
OpenGL ES profile extensions: