Ah I see! In that case it's likely that I thought I was plugging it in, but wasn't quite managing it - so yeah any extra visual feedback on that would be great.
For more feedback I guess another thing that could improve it is maybe the white outlines when you hover over plugs/sockets could be drawn above the hedges? Sometimes I found it hard to pick up a plug because I couldn't see it, even though I knew it was somewhere close to me behind a hedge.