The explanation given is not correct. This happens with all browsers. This is Jira version 8.2.3 and it happens when I try to force memory garbage collection.
"Your browser has not provided any parameters at all and your input has been lost. Press back now to try and resend the data. This is most likely caused by a bug in the browser. FireFox 3.6.0 have been known to exhibit this behavior.
For more information see this bug report Documentation
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Request URL: /secure/admin/ViewSystemInfo!garbageCollection.jspa"