Submit broken when used with AJAX.

For me, it's not the pager. If I click a VBO action (even when there is only one page of results) and the view uses AJAX, I get sent to the /views/ajax URL and a 404 error.

I am using a view with bulk operations, an exposed filter and ajax enabled.
When updating the filter, the form will come with /views/ajax as the action, because ViewsForm::buildForm() uses Url::fromRoute('').

Actually, this is a core issue.
The patch for that you can find here 🐛 Viewsform has incorrect form submit url if loaded through ajax Needs work