Steps to reproduce:

1. Navigate to Configuration -> Hosts/Templates.
2. Select at least one host/template from the list and click Mass update.
3. Choose a host group to replace/remove.
4. Choose an option that will surely fail mass update, for example, specify a tag value without tag name.
5. Press Update.

The same problem affects mass update of host, template and trigger tags.

Result:
Radio button list is reset to the first option if mass update fails.

Expected:
Radio button state is preserved if mass update fails.