Edit: changing one line slightly: var a = document.querySelectorAll('#Content .DataList.Discussions > li.Item'); restricts filtering to discussion lists, which I think is what you intended?
Edit2: This discussion was filtered out but shouldn't be:
Stylish Custom Add-on
1024 comments Most recent by LL25255252 5:40AM Style Development Author: Sonny
Works great (fixed)
Seems to work well on discussion lists.
It filters the first post from this thread: https://forum.userstyles.org/discussion/42109/google-chrome-replace-from-mozilla-firefox
In my opinion it shouldn't filter individual posts, only threads (on discussion lists like https://forum.userstyles.org/discussions)
Edit: changing one line slightly:
var a = document.querySelectorAll('#Content .DataList.Discussions > li.Item');restricts filtering to discussion lists, which I think is what you intended?
Edit2: This discussion was filtered out but shouldn't be: