I don't know the implementation details behind this, but it also seems to me that Ctrl-C/Ctrl-V has a separate clipboard while middle-click-to-paste pastes what

I don't know the implementation details behind this, but it also seems to me that Ctrl-C/Ctrl-V has a separate clipboard while middle-click-to-paste pastes whatever is selected. Makes no sense to me but I've tried to Ctrl-C / middle click and had issues before. Just one more thing that makes it worse.