Right click > Copy to clipboard should be available on any workspace project, so you can use that to reliably copy clipboard data.
The root cause behind why ctrl + c is occasionally refusing to copy data is still unknown. We still haven't been able to pin down a scenario where we're able to replicate it on our end. Since we haven't been able to witness the issue firsthand, we haven't identified a fix for it.
If you are able to consistently replicate a way that blocks ctrl + c from copying something to your clipboard, please let us know and we would be happy to push out a fix. There have been quite a few people who have experienced this, so we understand the issue is out there. We just need a way to see the issue in action so we know what to fix.
The issue I have is copying from a pop-up. Steps I take: click on
icon next to the segment or calculated metric to see the full definition in a pop-up/overlay window. Highlight needed text. Either Ctrl + C or right click and click Copy from browser menu, attempt to paste. Sometimes it works, sometimes it doesn't. It doesn't matter if I click/attempt to copy from the body of the workspace or the list of metrics/dimensions from the left-panel.