Entity search on a GUID - wildcard breaks the UI

When searching adapter space and trying to filter on a GUID based attribute, if the value put in the filter is not a GUID, then a System.FormatException is thrown (no surprise there). The problem is (and I am not sure if this is a bug or simply how it should behave) that I cannot find any way to clear that error or clear the filter. The only way to get a valid entity search screen back is to restart the service or restart the browser. It would be nice if refreshing the adapter view or re-selecting the entity count would present the normal entity list