Yeah, I didn't clear the cache entirely (I don't like to do so), just pressed Ctrl-F5 and now that 8 hours passed the cached content has expired probably.

Huh, and now the first page works almost every time I refresh it, although you haven't changed the script since...

Works perfectly on pages 2 and higher.
Doesn't work on page 1. Or rather it worked exactly one time out of 20 I refreshed the page.

Original layout flashes briefly before the style is applied.
It looks bad.
Try using a mutation observer and // @run-at document-start
Anyway maybe the restyling can be done in pure CSS like the one I've made for greasyfork: https://userstyles.org/styles/104650/greasyfork-org-compact-script-list