instal the latest version of WP Backery – JS composer 6.3
it’s the same : not workin in the administration Page
non of the plugin : deactivate Gutenberg and Deactivate Classic mode Work !!
the 6.2 make my front page disappear as well
i don’t understand why !!
i tried all things possible
the 6.3 look like the front page work !
but it disappear on the admin Pages …
a shame …
Roll back to WordPress 5.4.2 is the only workaround!
i will test : Enable jQuery Migrate Helper
but i am tired of this !!
i will never use this plugin in any way for futur work !!!