Date Filters often turn up Broken Handler

I originally posted this in the Date queue, but I am not receiving much help there.

A few times a day, a view that shows events will stop displaying data. Sometimes clearing the views cache will correct it, but not always. All the nodes wind up unpublished somehow, and looking in the view it will say BROKEN HANDLER or MISSING ARRAY next to the filter or field.

I am using Views Bulk Operations in another view that is a management interface for these nodes in the backend, so the admin can approve or unapprove events as they see fit. Curiously, if I select unpublish nodes and hit Publish, Direct Invoke, Batch, and Job Queue do not fire. It just refreshes the page with no status message.

I'm not entirely sure if the root cause here is Date, or VBO. Using latest stable releases of both. This is happening all too often and would appreciate some direction on this issue.

All date filters and fields for views will come up as BROKEN HANDLER / MISSING ARRAY and the only thing that seems to help is clearing views cache, and that works like half the time.

Using stable release of Views, VBO and Date.