private-tmp in meld breaks diff view

[bbhtt]

Firejail 0.9.62,0.9.63
Meld 3.20.2

System:Kernel: 5.4.0-42-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 Desktop: Xfce 4.14.2 
Distro: Ubuntu 20.04.1 LTS  

Seems like files are sourced from /tmp and private-tmp is creating problems in the diff view: https://imgur.com/SlIahe8. Not sure if this has something to with CLI/frontends using git. Other diff viewers seem to work.The repo is cloned in /home/git/GitHub/.
Maybe a comment should be written above it.

[rusty-snake]

With diffview you mean what? Which command or menu?

[bbhtt]

With diffview you mean what? Which command or menu?

The comparison view you get when you change a file.

[rusty-snake]

For me it works, can you give more detailed steps.

[bbhtt]

It works in CLI I think. Set meld as diff tool in it, open a file in text editor through cola, change something, right click on unstaged chages, view using diff tool.

Commenting private-tmp solves the issue.

[rusty-snake]

git difftool file_with_changes

[bbhtt]

Doesn't work without that patch, I had it commented already in another terminal when I said "CLI" works. Thanks,