I hope it’s okay to jump into this thread. I, too, seem to have “lost” my mobile menu. The hamburger/icon is there, but no drop down.
I’ve been trying retrace my website-steps today to see if I may have inadvertently changed the menu behavior – earlier I was attempting to reposition/resize the mobile background image via CSS. Also, one of my plugins updated today (Updraft Plus). Other than that, just some run-of-the-mill content adjustments.
The desktop menu is still working fine…
Any advice would be greatly appreciated!