Some software I use uses inkscape to convert images from one format to another, as an intermediate step. This means that they write images to the /tmp folder, and attempt to use inkscape on those images to obtain the image format they need. However, on my system, inkscape doesn't like the /tmp folder.
When trying to open/edit an svg file in the /tmp directory using inkscape, e.g., inkscape /tmp/test.svg it throws the error/warning
** (inkscape:6528): WARNING **: Can't open file: test.svg (doesn't exist)
The file exists, and I can open it with Budgie's default viewer.
When doing something similar in the home folder, e.g., inkscape ~/test.svg the test file opens just fine.
Inkscape itself runs when calling inkscape somewhere in the /tmp folder, it just can't use files from the folder.
I am running Solus 4, and installed inkscape using sudo snap install inkscape.