We have been using firefox as our default browser for over Ten years. We have several internal web pages created with google sites, with simple google sheets containers that have been working fine in that period. As of two days ago, the pages started displaying incorrectly in firefox as shown in attachments. Have tried disabling trackers and extensions and emptied cache as well as making sure firefox is fully up to date. This is happening on multiple terminals at several locations. Safari and chrome browsers work fine. Any troubleshooting help appreciated or if this is a known bug?