Cannot clearn Alarms for SQL Cache Hit Ratio (build 7101)

Cannot clearn Alarms for SQL Cache Hit Ratio (build 7101)

I am unable to clear or delete alarms from my SQL server on the "Cache Hit Ratio". When I select the alarms and click delete or clear I just get a blank screen. I'd tried removing the alert, which keeps new alarms from being generated but I still can't clear out the old ones. This is on a fresh install, downloaded yesterday - build 7101.

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