Comment by dijit
6 months ago
This kind of thing is common, there was a file called tweaks.cpp which had a list of domains that had slightly different behaviours.
That file was very telling to be honest and was well commenter. Firefox has a similar file.
Firefox’s website “interventions” are documented on Firefox’s about:compat page. Each intervention has a link to more information about the website issue it’s fixing and a button to turn it off.