Video tiles during an Amazon Chime meeting are not displaying as expected.
macOS users have reported issues with video when they are running macOS 10.14 (Mojave) or 10.15 (Catalina).
Apple has reported that there is a bug in security update 002 which caused a GPU glitch in any application using GPU video.
Please install the latest Security Update 2020-003 (Mojave, Catalina) or the most recent.
See https://support.apple.com/en-us/HT211289 for more details on the security update.
Also, please make sure you have the latest Amazon Chime client installed. Please select Check for Updates ... under the Amazon Chime menu to ensure you are up to date.
View the Amazon Chime User, Administration Guide and API Reference on the AWS Documentation site.
Find more information about the Amazon Chime solution, pricing, customer references, getting started, and other resources.