I couldnt post the reply I wanted that included the paths of the deprecations, so here it is:
After saving the page from Live Editor, I get redirected to the backend-builder, and I see the following:
/wp-admin/js/iris.min.js: jQuery.isArray is deprecated; use Array.isArray
/wp-admin/js/iris.min.js: jQuery.expr[‘:’] is deprecated; use jQuery.expr.pseudos
/wp-admin/js/iris.min.js: jQuery.isFunction() is deprecated
/wp-admin/js/color-picker.min.js: jQuery.isArray is deprecated; use Array.isArray
/wp-admin/js/color-picker.min.js: jQuery.expr[‘:’] is deprecated; use jQuery.expr.pseudos
/wp-admin/js/color-picker.min.js: jQuery.isFunction() is deprecated
/wp-content/plugins/essential-grid/admin/assets/js/plugins/utils.min.js: jQuery.expr[‘:’] is deprecated; use jQuery.expr.pseudos
/wp-content/plugins/essential-grid/admin/assets/js/plugins/utils.min.js: jQuery.fn.mouseup() event shorthand is deprecated
/wp-content/plugins/essential-grid/admin/assets/js/plugins/utils.min.js: jQuery.isFunction() is deprecated
/wp-admin/js/common.min.js: jQuery.fn.delegate() is deprecated
/wp-admin/js/media-upload.min.js: jQuery.fn.resize() event shorthand is deprecated
/wp-content/plugins/litespeed-cache/assets/js/litespeed-cache-admin.js: jQuery.fn.click() event shorthand is deprecated
/wp-content/plugins/litespeed-cache/assets/js/litespeed-cache-admin.js: jQuery.fn.change() event shorthand is deprecated
/wp-content/plugins/advanced-custom-fields/assets/js/acf-input.min.js: jQuery.isNumeric() is deprecated
/wp-admin/js/common.min.js: jQuery.fn.click() event shorthand is deprecated
/wp-admin/js/common.min.js: jQuery.fn.bind() is deprecated
/wp-admin/js/common.min.js: jQuery.fn.mousedown() event shorthand is deprecated
/wp-content/plugins/essential-grid/admin/assets/js/plugins/utils.min.js: jQuery.fn.focus() event shorthand is deprecated
/wp-admin/js/edit-comments.min.js: jQuery.fn.bind() is deprecated
/wp-admin/js/edit-comments.min.js: jQuery.fn.click() event shorthand is deprecated
/wp-admin/js/edit-comments.min.js: jQuery.fn.keypress() event shorthand is deprecated
/wp-admin/js/edit-comments.min.js: jQuery.fn.dblclick() event shorthand is deprecated
/wp-content/plugins/essential-grid/admin/assets/js/plugins/utils.min.js: jQuery.fn.bind() is deprecated
/wp-admin/js/postbox.min.js: jQuery.fn.click() event shorthand is deprecated
/wp-admin/js/postbox.min.js: jQuery.fn.bind() is deprecated
/wp-admin/js/post.min.js: jQuery.fn.click() event shorthand is deprecated
/wp-admin/js/post.min.js: jQuery.fn.change() event shorthand is deprecated
/wp-admin/js/svg-painter.js: jQuery.fn.hover() is deprecated
/wp-content/plugins/gdpr-consent/assets/dist/js/admin.min.js: jQuery.fn.click() event shorthand is deprecated
/wp-content/plugins/siteorigin-panels/js/siteorigin-panels.min.js: jQuery.fn.bind() is deprecated
/wp-content/plugins/black-studio-tinymce-widget/js/black-studio-tinymce-widget.min.js: jQuery.fn.resize() event shorthand is deprecated
Some may not have anything to do with the builder, right?
Replies at Thread: Live Editor doesn’t work in WP 5.6, even after updating to 2.11.8.