Tab toggling extensions not working for months, require constant switching on/off

I've used a few tab extensions such as Recent Tabs 4.0 and Quick Key to create a shortcut to rapidly toggle between the two most recent tabs. They worked fine for months, until about a month or so ago, when they just stopped working. I always have to go into extensions and toggle the on/off for them to work again. Has anyone else noticed this?

And yes I'm aware Control + Tab can accomplish this but for whatever reason they do not let you customize this keybinding and I find it extremely unergonomic, forcing me to physically shift my entire left hand to reach both keys.