I have recently discovered an issue within spark. I do not know if it is only on the systems I run, but here goes nothing…
When spellchecker is engaged, right-click paste does not work. In fact, the option to paste is non-existent. I can paste via cntrl+v, however.
I am running windows 10 enterprise systems. All can reproduce the error. I can turn spellchecker off and right click paste is back.