When some pages that use <@htmlTemplate.renderDateTimeField> are refreshed the icons associated with those fields start to disappear.
For example, the ShipBeforeDate fields of the ship groups at ordermgr/control/editOrderItems disappear one at a time for each refresh. Another example of this happening is at ordermgr/control/EditQuote for the QuoteIssueDate field but oddly the ValidFromDate and ValidThruDate don't exhibit the behavior even though they are the same type of field. Also, the statusId field of the ordermgr/control/EditQuote also gets unset after the first refresh which may be related.
I'm not sure if this behavior is isolated to the <@htmlTemplate.renderDateTimeField> or also occuring for form-widget <date-time type="timestamp"/> fields as well.