Some keys no longer work (Razer Huntsman V2 Tenkeyless)

This may possibly be related to #2922 (closed).

The number sign/hash key '#' and the backslash key '\' no longer light up on my Razer Huntsman V2 Tenkeyless and both keys are not shown on the 'LED view' keyboard. This is with a UK keyboard layout. Maybe 0.8 is not be working correctly with non-US keyboard layouts? Because the other issue is with a Spanish layout.

Previously in 0.7 both of these keys worked, and in previous pipeline builds too, but not in 0.8 or the latest pipeline build. The strange thing is that if i go back to older versions the keys are still missing... Weird.

There's one way i can get both keys to light up though: Click on the 'Keyboard' text (shown below) and then select a colour. So it's like the two keys are still there, but they're not actually shown, so obviously i can't control each key individually using this method. The red squares in the image below are where the missing '\' and '#' keys should be.