How are you accessing Miro - from a desktop/tablet/phone app or from your browser?
If it is a browser, can you try clearing your cache, and logging out and back in to Miro to see if that fixes it?
I just did a quick test using Miro through Google Chrome and the usual Ctrl-C/Ctrl-V combination after selecting a group of sticky notes worked for me…
How are you accessing Miro - from a desktop/tablet/phone app or from your browser?
If it is a browser, can you try clearing your cache, and logging out and back in to Miro to see if that fixes it?
I just did a quick test using Miro through Google Chrome and the usual Ctrl-C/Ctrl-V combination after selecting a group of sticky notes worked for me…