Hello, this is actually due to the "Disable Fingerprinting" setting in the extension which turns on a Firefox setting for increased tracking protection. This Firefox setting essentially sets any publicly available data (window size, user's timezone data, Firefox version, etc) to something very general. This keeps the user from being uniquely identified by Ad and Tracking companies because, the user essentially looks like a generic user rather than a unique user. Installing the extension turns on this Firefox setting by default but can be turned off by clicking on the "Extension Settings" icon, then "Tracking" and finally the "Disable Fingerprinting" checkbox. Then restart the Firefox browser and the timestamp should now be local rather than set to UTC time.

If this fixes your issue, please consider re-evaluating this review and setting a better rating.