Is anyone aware of a Chrome extension (or other spyware) that uses the macOS system clipboard to steal WhatsApp data? I recently had an incident where WhatsApp

Is anyone aware of a Chrome extension (or other spyware) that uses the macOS system clipboard to steal WhatsApp data? I recently had an incident where WhatsApp Web was open in a tab in the background in a different browser window to the one I was actively using. I received and replied to a message on my phone. So imagine my surprise when I went to paste what I had previously copied from a web app in one Chrome tab to into a textfield in another, both in the active Window, to find that what was pasted was the second last message that I had sent in WhatsApp on my phone. I have since deleted my Chrome profile at a system level, and the only extension currently installed is a well known password manager, but it bothers me to think what could have caused this aberrant behaviour, and whether there's something still installed on my system that's stealing data.