1. Data can be lost when saving projects
A certain deprecated jQuery function in WordPress 5.5 is causing some settings in Slider Revolution to be reset to their default value upon opening the Slider Revolution editor.
Don’t save any module if you have updated to WordPress 5.5 but haven’t updated Slider Revolution yet.
2. Functionality and styling problems in Gutenberg
Furthermore, some functionality in the Gutenberg editor could be broken as a lot of things were changed there too in the newest version of this editor.
Update Slider Revolution to a version 6.2.18 or newer!
The new version that fixes the above problems is available NOW! Go get it at: https://account.sliderrevolution.com/ or CodeCanyon.