Single post in Disable Right-click Context Menu for Field Pokemon
Forum Index > Core > Suggestions > Completed > Disable Right-click Context Menu for Field Pokemon >
You actually aren't supposed to be able to do that, but it works because the "mousedown" code doesn't check which button triggered it.
This is more of a "not a bug, it's a feature" situation, and it makes sense for the menu to not appear when a Berry is selected.