Shift Quote Deletes Line

I selected some text to replace it with a quote character. When I pressed Shift-Quote, an entire line disappears. It only happens for Shift-Quote. If I type more, the line reappears.

The top shows the selected text, the bottom shows what it looked like after I pressed Shift-Quote.

Thanks, this appears to be an issue with having smart quotes enabled and occurs for both single and double quotes. I’ve filed a report for it.