Testing this just now, if I hit Ctrl + K to open the link modal when creating a new whisper, after clicking the “OK” button to insert the link, the canned reply that I was composing disappears. I am not seeing any errors in my console. Testing this with the latest Chrome browser on Ubuntu.
I’m assuming the issue is related to both “Add Canned Reply” and “Insert Hyperlink” using modal windows. When the Insert Hyperlink modal is opened the Add Canned Reply modal automatically closes.