Cannot enable Hot Corners

[guv999]

Hi
I have just installed 16.04 and have one issue, I cannot enable any hot corners for things such as 'present windows'.
I open System Settings and then Desktop Behaviour//Screen Edges
The screen in the 'Active Screen Edge Actions' is just black and no options are available.
I have checked in Desktop Effects and both Desktop Grid and Present Windows are enabled there however of course through hot keys.
Appreciate any guidance and support.
Thanks

[acheron]

What happens when you click the box for the screen edge/corner in question? No pop-up of options?

[guv999]

What happens when you click the box for the screen edge/corner in question? No pop-up of options?

It works! As long as I click in the appropriate corner, the options appear. Never actually thought to check what happened when I click

[Snowhog]

It works! As long as I click in the appropriate corner, the options appear. Never actually thought to check what happened when I click

That suggests (to me) that you are using a Desktop Theme that isn't completely compatible with all the icons used in 16.04.

[acheron]

Not sure it's an icon thing. Just that it's not made very clear that you need to click on the shown boxs to give you the options popup.