Bigpipe module conflictng with Lightgallery module

This is not critical because you can disable big pipe to work around it.

Are there error messages logged by Drupal or in the browser console?

Changes are made on on 11.x (our main development branch) first, and are then back ported as needed according to our policies.

Since there's been no follow up in 3+ months going to close out. If still a bug in D11 please re-open.