What does "triage an issue" mean?

I've found this definition of triage:

"The process of sorting people based on their need for immediate medical treatment as compared to their chance of benefiting from such care."

So I can understand that triaging an issue list means giving some priorities to the items and sorting the list.

But what does triaging an issue mean? Giving it a low priority or the other way round? I suppose the former but haven't found any evidence for it. All the dictionaries I've found deal with triaging some set only.

"Triage" also has this meaning:

the determination of priorities for action in an emergency.

So, if I was to triage an issue, I would just determine how important this issue was, whether it is an urgent matter, then on the basis of my diagnosis, put this issue on a list, based on its importance.

I should've thought that "triaging an issue" has a similar meaning to "triaging an issue list", but just applying to one item in said list. So, "giving priority to this item and putting it somewhere in a list of triaged items."

If we look at its actual definition, it would just mean "ranking an issue in importance or priority." This isn't a common phrase, but I think that it most likely means "giving it a lower priority."

In a normal medical situation, the medical staff available will give their full attention to every case.

In a triage situation, though, this stops being the case: some cases are ranked as having less priority than others. Effectively, some cases remain at the "normal" level (full attention), and some are ranked at lower than that. Invoking triage necessarily means deciding that some issues are less important than others.

I could see this phrase being used in a formal situation to politely say "This isn't that important. Let's ignore it for now."