bug in reporting

bug in reporting

hello,
when i open the device and press on the pie chart ( availability) it appears the today availability , but when i try to custom it for , it still display for me the today availbilty numbers (but of course the title of the page is the availabilty of my custumized period).
any solutions ?
also if i tried to go to "reports" tab and select device , there is no "availabilty " report i can generate , only response time.


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