Notice when five tickets are one bug

Support answers questions one at a time. That is the job, and it is also why the fifth person reporting the same thing gets a polite individual answer rather than triggering an alarm.

The pattern is visible only from above, and nobody is standing above it.

Let a week accumulate first

This does not work on a day. You need enough volume for a repeat to mean something, which for most small teams is a week.

Ask for clusters, not for a summary

The difference between a useful report and a boring one is entirely in this distinction. A summary of the week's questions tells you what support is like. A cluster tells you what to fix.

Every Friday at 4pm, review the questions answered this week.

Group them by underlying cause, not by topic. Two people asking "why is my
export empty" and "where did my report go" may be the same bug; two people
asking about pricing probably are not one thing.

For any cluster with three or more, give me:
  the cause in one sentence
  how many people hit it
  their exact words, quoted, so I can judge whether it is really one thing
  whether it looks like a bug, a missing document, or a confusing screen

Do not report clusters of one or two. If nothing clustered, say so.

Quoting their exact words is what stops false clusters. Grouping by theme alone will happily merge three unrelated problems under a plausible heading, and you will chase a bug that does not exist. Reading the actual sentences takes twenty seconds and settles it.

Sort the three outcomes differently

The last field is the one that decides what happens next, and the three are not the same kind of work.

A bug goes to engineering. A missing document is yours to write and it is the cheapest fix available. A confusing screen is the expensive one, and it is worth knowing how many people hit it before anyone argues about redesigning it.

Open one issue, not five

Once you trust the clustering, have it open a single task per cluster with the quotes attached, rather than reporting and leaving you to file it.

One task with five customer sentences in it is a far better argument for prioritisation than five separate tickets, which look like noise.

What good looks like

Once a week you learn that something you thought was an isolated complaint has happened five times, and you find out in the week it happened rather than in next quarter's churn.

The honest measure is whether cluster counts fall after you fix things. If the same cluster returns at the same size a month later, the fix addressed the symptom.