Appended TLD and truncated plugin URLs

We tried to use this plugin on a subdomain network with the first four Domain Mapping settings activated. After parking a domain, then adding the domain under Domain Mapping and setting it to primary, we lost functionality for some of our plugins (e.g., Jetpack and Appointments+). Apparently javascript and CSS URLs got corrupted in the HTML for all plugins. The TLD (i.e., .net) got changed to .nets, .nety, or .netf and the rest of the URL was removed. Deactivating caching, security and seo plugins along with our varnish cache didn’t resolve the issue.

We resolved the issue by removing the plugin and doing this instead:

• https://kaspars.net/blog/wordpress/wordpress-multisite-without-domain-mapping
• https://tommcfarlin.com/resolving-the-wordpress-multisite-redirect-loop/

Not as convenient for superadmin/centralized login, but everything works. Is there another solution?

https://www.ads-software.com/plugins/wordpress-mu-domain-mapping/