PUBLIC MARKS from decembre with tags fir & script

Greasemonkey 4 is changing how it runs user scripts. Many user scripts will continue to run as expected, but this will break some scripts. If you rely on such scripts, you might want to install Violentmonkey or Tampermonkey, both of which provide compatibility for existing scripts. If you'd prefer to stick with Greasemonkey, you'll need to wait for the script to be updated to be compatible. Find the original author of your script, and ask them to update for Greasemonkey 4 compatibility. Referencing this post may help.