Cannot Update Revision ERROR

Hi

after WP 5.9 update it seems that your free plugin is broken
plugin version: 3.0.8

when pressing UPDATE REVISION the editor breaks and this is the error

Error: Failed to execute 'insertBefore' on 'Node': The node before which the new node is to be inserted is not a child of this node.
    at bf (https://---.com/wp-includes/js/dist/vendor/react-dom.min.js?ver=17.0.1:150:474)
    at bf (https://---.com/wp-includes/js/dist/vendor/react-dom.min.js?ver=17.0.1:151:41)
    at bf (https://---.com/wp-includes/js/dist/vendor/react-dom.min.js?ver=17.0.1:151:41)
    at Vh (https://---.com/wp-includes/js/dist/vendor/react-dom.min.js?ver=17.0.1:149:471)
    at Qj (https://---.com/wp-includes/js/dist/vendor/react-dom.min.js?ver=17.0.1:173:495)
    at unstable_runWithPriority (https://---.com/wp-includes/js/dist/vendor/react.min.js?ver=17.0.1:24:26)
    at Za (https://---.com/wp-includes/js/dist/vendor/react-dom.min.js?ver=17.0.1:73:8)
    at eb (https://---.com/wp-includes/js/dist/vendor/react-dom.min.js?ver=17.0.1:170:163)
    at gf (https://---.com/wp-includes/js/dist/vendor/react-dom.min.js?ver=17.0.1:162:317)
    at https://---.com/wp-includes/js/dist/vendor/react-dom.min.js?ver=17.0.1:73:230

it seems a compatibility issue with the gutenberg editor itself.

PS: the wordpress post UPDATE, PUBLISH button works ok

Can you please take a look?
Thanks