This is a bug in Dashboard itself that can happen with any widget that shows tooltips. In Delivery Status version 6.2.8 or later, these tooltips are disabled by default, so we recommend updating.
For older versions of the widget, there is a hidden setting to disable the tooltips. Open Terminal, enter this on one line, then press return:defaults write widget-com.junecloud.widget.deliverystatus disabletooltips 1; killall Dock;
To turn the tooltips back on, enter:defaults delete widget-com.junecloud.widget.deliverystatus disabletooltips; killall Dock;