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Prevents Facebook from auto-refreshing the news feed
This userscript prevents Facebook from auto-refreshing your feed when you switch tabs. It keeps your place in the timeline instead of that annoying refresh that makes you lose everything you were reading.
Fixed the script completely freezing Facebook. Yeah, that was bad.
Turns out trying to block EVERYTHING Facebook does is a terrible idea. This version takes a much more targeted approach - only blocking what's actually needed to prevent the refresh. If it works, don't touch it!
To close Facebook posts, use ESC key or X button only. Clicking outside triggers redirect to top of feed. Script prevents refresh but not the redirect.
See screenshot below for details.