LearnDash course builder is not being cooperative

Lessons drift in the Course Builder -- or don't stick when inserted to the line-up of courses

This is a bit of a frustration.

Can't always add new lessons to a big course.

And, the lessons often shift from different sections in the course.

Sure, I've got nearly 200 lessons and a number of topics within those lessons. 

Seeking a fix or some workaround to shuffle lessons and include new ones.

Issues with the builder in LearnDash.

Loom Video

• https://www.loom.com/share/e856c4f4fe4649718a939fe1bc076c38

LEARNDASH SETTINGS

Learndash Version 3.2.2

WordPress version 5.5.

SERVER SETTINGSPHP Version 7.4.6 PHP OS FreeBSD PHP OS Family BSD MySQL version 5.6.48 max_execution_time 500 max_file_uploads 25 max_input_time 240 max_input_vars 2400 WORDPRESS ACTIVE THEMEThrive Theme Builder Version: 1.6.1 Path: http://thrivethemes.com/ WORDPRESS ACTIVE PLUGINSAkismet Anti-Spam Version: 4.1.6 Path: https://akismet.com/ All-in-One WP Migration Version: 7.26 Path: https://servmask.com/ All-in-One WP Migration Unlimited Extension Version: 2.37 Path: https://servmask.com/ amr shortcode any widget Version: 3.7 Path: http://webdesign.anmari.com/shortcode-any-widget/Caldera Forms Version: 1.9.2 Path: https://CalderaForms.com Classic Editor Version: 1.6 Path: https://wordpress.org/plugins/classic-editor/Fast User Switching Version: 1.4.8 Path: http://www.tikweb.com/wordpress/plugins/fast-user-switching/Intuitive Custom Post Order Version: 3.1.2 Path: http://hijiriworld.com/web/plugins/intuitive-custom-post-order/LearnDash LMS Version: 3.2.2 Path: http://www.learndash.com LearnDash LMS - Course Grid Version: 1.6.0 Path: http://www.learndash.com LearnDash LMS - Notifications Version: 1.4.1 Path: LearnDash LMS - Stripe Integration Version: 1.6.0 Path: LearnDash LMS - Zapier Integration Version: 2.1.0 Path: http://www.learndash.com ManageWP - Worker Version: 4.9.7 Path: https://managewp.com PDF Embedder Version: 4.6 Path: http://wp-pdf.com/ Postie Version: 1.9.53 Path: http://PostiePlugin.com/ Post Type Switcher Version: 3.2.0 Path: https://wordpress.org/plugins/post-type-switcher/SEOPress Version: 3.8.9.1 Path: https://www.seopress.org/ Simple Wp Sitemap Version: 1.2.1 Path: https://www.webbjocke.com/simple-wp-sitemap/SVG Support Version: 2.3.18 Path: http://wordpress.org/plugins/svg-support/Thrive Apprentice Version: 2.3.0.1 Path: https://thrivethemes.com Thrive Architect Version: 2.5.8.1 Path: http://www.thrivethemes.comThrive Clever Widgets Version: 1.56 Path: https://thrivethemes.com Thrive Comments Version: 1.4.6 Path: https://thrivethemes.com Thrive Headline Optimizer Version: 1.3.0 Path: https://thrivethemes.com Thrive Product Manager Version: 1.2.4 Path: http://thrivethemes.com Thrive Quiz Builder Version: 2.3.0.1 Path: https://thrivethemes.com Thrive Ultimatum Version: 2.3.0.1 Path: https://thrivethemes.com TinyMCE Spellcheck Version: 1.3 Path: Uncanny Automator Version: 2.6.1 Path: https://automatorplugin.com/ Uncanny Toolkit for LearnDash Version: 3.3.3 Path: https://www.uncannyowl.com/uncanny-learndash-toolkit/Wordfence Security Version: 7.4.10 Path: http://www.wordfence.com/ WP-SpamShield Version: 1.9.21 Path: https://www.redsandmarketing.com/plugins/wp-spamshield/WP User Avatars Version: 1.4.0 Path: https://wordpress.org/plugins/wp-user-avatars/

More updates:

https://www.loom.com/share/99a59ea8dc344e3694119c8add122215

https://www.loom.com/share/134a159ce5e5474e8f98fa955abb9005

Posting to the ThriveThemes Facebook page, Friday AM:

Wonky behaviors on TTB & LearnDash Course Builder. After "update" - wheel keeps spinning. Plus, lessons in a big course (aprox 200 of them) drift to different sections. Topics don't always stick. Browser alert (command-shift-J) reports:

DevTools failed to load SourceMap: Could not load content for chrome-extension://liecbddmkiiihnedobmlmillhodjkdmb/js/content.js.map: HTTP error: status code 404, net::ERR_UNKNOWN_URL_SCHEMEDevTools failed to load SourceMap: Could not load content for https://read.swimisca.org/header.min.js.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILUREDevTools failed to load SourceMap: Could not load content for https://read.swimisca.org/builder.min.js.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILUREDevTools failed to load SourceMap: Could not load content for https://read.swimisca.org/metaboxes.min.js.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILUREDevTools failed to load SourceMap: Could not load content for https://read.swimisca.org/builder.min.css.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILUREDevTools failed to load SourceMap: Could not load content for https://read.swimisca.org/header.min.css.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILUREIs this a ThriveTheme thing or LearnDash or even elsewhere?

I understand that there is a WP Core thing with saves, and I've seen that elsewhere when the leave page dialog box is revealed when just doing an update. ???