Facebook Auto-Refresh Blocker by rhsCZ

Facebook Auto-Refresh Blocker helps you keep your place in the Facebook feed. When you switch to another tab or leave Facebook for a while, Facebook often refreshes the page and moves you away from the post you were reading. This add-on prevents that automatic feed refresh, so you can return to the same place and continue where you left off.

Features:

Blocks Facebook feed auto-refresh after returning to a tab
Helps preserve your scroll position in the feed
Simple on/off protection toggle
Manual light, dark, or automatic theme in the popup
Works only on facebook.com and its subdomains
No remote code
No data collection
No account required