If an issue occurs more than once, the Issue Details panel notifies you by displaying an additional Occurrences field.
You can open the drop-down list to go directly to one of the occurrences, or you can click one of the the left/right arrows to either side of the drop-down list, in order to step through the occurrences in sequence.
When a static-analysis issue occurs more than once, the Contributing Details panel can help you see if different occurrences arise from the same contributing logic, or if there are multiple areas of contributing code that might be problematic.
When all occurrences of the issue have been resolved, the issue should disappear from the Issues list altogether.