Yep, there have been many beneficial bugs that lasted ages. Colony through immune shields - worked until season 15 Breaking the glyphs on the witness early - still works Craftening - lasted about 2 weeks Telsto through immunity bubble - lasted 2 weeks Many out of bounds - theres still hundreds Frame-rate damage bugs - never removed permanently Telesto crashing games - still works (just shoot a player with a bunch of telesto shots) Ethernet cord crota - lasted a month Pushing atheon off - lasted a month Pushing templar off - lasted a month Those are some different bugs throughout the years that werent patched immediately. I dont know where people get the idea that anything beneficial gets patched or nerfed immediately.