I am experiencing the exact same problem. Everything was working then the drop down menus stopped being visible. https://vmrwhitsundays.com.au Is this related to the recent WP upgrade? What is the best way to fix this?
Thank you for your help, but I have resolved the issue. I needed to add some padding to the bottom of the page as that was the reason the button was being cut off. I have added a 50px spacer and that fixed it.
Cheers ??