My copy paste does not work for any block

@Araminta Exact same as Derek, copy via command V works, not paste.
Same if I go to paste it in a parent element, I tried all combinations.
I saw it work ONCE as if there was a glitch but despite the orange link line being set, the copied element wasn’t linked.
Again that happened once only and I tried 30 times on various elements : sections, paragraphs, buttons…
As you probably can tell, I am stuck on my current project so sorry to mention @Louis on this too.

I wonder if the person on this thread had the same bug :

I am using a few chrome extensions that may alter the shortcuts, so I will try that on firefox now.