Last Light knockout bug

Been playing through Last Light and really enjoying it, at least until I got hit with the bug preventing you from performing takedowns from "Bandits" onward. Is there any fix? So far I've tried:

• Disabling cloud sync and deleting 2034_auto_save, 2034_I07_tunnel.player and 2034_I07_tunnel_2.player, then replaying from "Revolution" as suggested here
• Avoiding killing spiders in "Regina" with light and instead doing the knife finisher or shooting them as also suggested in that thread
• Not knocking out the last armored enemy in "Revolution" as suggested here

Don't know what else there is to try. I'm going for good ending and no kill achievements so knockouts are pretty important, and I'd really prefer not to start a new game, especially since the bug could just happen all over again. Anyone been able to fix this?

UPDATE: Finally got rid of it! I combined all of the above methods, as well as quitting to main menu at the start of "Regina" and "Bandit" before loading back in from chapter select and continuing normally⁠—my hunch is that it's the combination of level save deletion and quitting out to menu that did it, as the other two suggestions don't really make sense. Have been able to use takedowns in "Bandits" and "Venice" so far. I'll make another edit if I run into this issue again, as I've seen at least one person on the Metro discord complain about the bug reappearing later in the playthrough.