Dates in the Activity tab are shown in a wrong timezone

Issue Summary

When viewing the Activity tab in an issue, the time for the item doesn't match the real time the activity happened - the time seems to always be in UTC.

Hovering the cursor over the date, shows the correct date.

This is reproducible on Data Center: yes

Steps to Reproduce

1. Navigate to an issue
2. Post a comment
3. Navigate to the Activity tab
4. Check an activity

Expected Results

The comment date should match the activity date.

Actual Results

The activity date is at a different timezone.

Workaround

Currently, there is no known workaround for this behavior. A workaround will be added here when available