I cannot drag and drop a folder
Getting an error when I open a folder,
Getting tags on /some/workspaces failed since NXTag is missing on WorkspaceRoot document type. This operation will be ignored., could this be the cause?
No that's not the root cause. You should check you have
draggable$="[[_hasWritePermission(document)]]" drop-target-filter="[[_dropTargetFilter]]" in your document listing element and
Nuxeo.DocumentContentBehaviorin the element behavior.