Dropdown search menus not working Firefox 71.0 Mac OS High Sierra

[swiss-tools]

As above - everything fine before upgrading to SSD. Menus fine on My eBay page.

[swiss-tools · Accepted solution]

Should have added, works fine on eBay.com, it's just the .co.uk site. It's also restricted to Firefox - everything works fine on Safari and Chrome.

[swiss-tools]

Drop-downs seem to work on all other sites.

[swiss-tools]

Is there a plugin that should be enabled?

[dhbookds]

This is the US board..........  if there is trouble on the UK site, probably be best to post there for information pertaining to it.........

[toffeepenny]

SOLVED:  I had the exact same issue with Firefox 72.0.2, I couldn't use the drop down boxes and also the 'select all' tick box wouldn't work.

What fixed it for me was to disable AdBlock Plus then refresh page and they all worked again.

I still have uBlock Origin on and this caused no problems.

Hope that helps.