Gutenberg native hamburger menu not working in Firefox Android

I have WordPress 6.6.1 installed, and the Gutenberg plugin ver 19.0.0 with a blank theme created by 'Create Block Theme'. I've set up my menu to collapse into the hamburger on mobile and was testing it last night on fully up to date Firefox Android and tapping it does nothing.

It works on every other browser I've tried: Chrome, Opera, Samsung.

I've cleared the Firefox cache on my phone.

I'd appreciate any thoughts or help on this!