Hello, and sorry for the slow reply here.
Are you able to reproduce this behaviour with current versions of Firefox on Ubuntu 20.04? I just tried and both the JSON and HTML backup options worked fine and the respective files were saved.
Hello, and sorry for the slow reply here.
Are you able to reproduce this behaviour with current versions of Firefox on Ubuntu 20.04? I just tried and both the JSON and HTML backup options worked fine and the respective files were saved.