Hello, Jeff!
Thanks very much for reading, looking and commenting. I appreciate it.
A couple of days ago, I upgraded my mac OS to Monterey 12.6.3, and this morning, upgraded my browser to the latest Firefox 109.0.1. It seems to have made the problem worse, if that is possible.
I’ve not added any extensions to my browser, but checked to see what, if anything, is running as an extension. There are two:
OpenH264 Video Codec provided by Cisco Systems, Inc.
This plugin is automatically installed by Mozilla to comply with the WebRTC specification and to enable WebRTC calls with devices that require the H.264 video codec.
Widevine Content Decryption Module provided by Google Inc.
This plugin enables playback of encrypted media in compliance with the Encrypted Media Extensions specification. Encrypted media is typically used by sites to protect against copying of premium media content.
Both of these are automatically updated by the browser and were last updated in July and November of 2022. I have no idea if either of these would affect the designer of Webflow.
I will open a trouble ticket. Thanks for your help!