Hi, did you press on the yellow blocks, as they are the only thing you can grapple with? Otherwise that is an odd bug nobody else has encountered
Ah no sorry I didn't realise that! Assumed you'd be able to do it everywhere! I'll give it another go :)
You're right it does work perfectly, I was just being a moron! It's really cool once I get it working, actually quite like that you can phase through the walls when you're grappling, adds an extra element to the challenge haha :) Great job!