Hey @jmacman,
That’s certainly an odd behavior! As far as I’m aware there hasn’t been any similar reported issues. You can always check to see if there are any incidents pertaining to Klaviyo by checking and even subscribing to our Public Status page.
Additionally, I took the liberty of confirming this within my own test account and so far everything seems to be working as expected when creating and editing flows and their emails.
This leads me to suspect there may be something isolated to your own setup that may be causing the issue. I would suggest double checking to make sure there aren’t any third party softwares that may be impact your use of Klaviyo. Examples of this could be overly aggressive anti-viral softwares, ad blockers, or extensions.
I would also advise to clearing your cache and cookies, fully closing out of your browser, and restarting your computers. That tends to resolve most of my computer issues!
David