Keyboard shortcuts not working

hi all, so im using a alienware r7 for unreal and while in the material builder i noticed that my shortcuts wont work, ive tried 1+left click, m+left click ( im using the trackpad with the lerft/right keys) and a few others but they just dont seem to be working, but they work fine on my desktop pc.

ive tried restoring the keyboardshort cuts back to the default settings and trying to creating a while new project incase it was just a glitch but the problem is still occuring

any ideas how i can fix it ?
cheers

bump :frowning:

think my post got abit lost in the pages

I have the same issue, tried everything so far and still I am not able to fix it.