Exit sleep screen gesture not working on Kobo Forma

Just installed KOReader and really enjoying it so far!

The Kobo Forma has an annoying power button to deal with so I'm trying to replace it with gestures to sleep and wake the device.

I'm using the "Suspend" gesture to put the device into sleep mode however I the "Exit sleep screen" gesture doesn’t wake the device up.

Am I missing something or does this command not work on this device?