Google has announced that it will no longer backup media from chat apps like WhatsApp, Messenger, Instagram, Snapchat, and Twitter to Google Photos.
The company is only changing the default settings in Google Photos to ensure that it does not backup media content from messaging apps.
A notification for this change will also show up in the Google Photos app.
Your existing chat media that's backed up to Google Photos will not be affected by this change in any way.
You can also manually enable the feature from within the Google Photos app to ensure that all your chat media continues to get backed up.