A support tool gets slower the longer it is open. After a morning of use, interactions are sluggish and the tab eventually crashes. Nothing is slow on a fresh load. How do you find it?

Answer it out loud before you open anything. The value of the flags below is in comparing them to what you actually said.

The situation behind the question

An agent console. Users navigate between hundreds of ticket views in a session, each with a chart, a live-updating status subscription and a resize-aware layout. The team cannot reproduce it in a normal working session.

What it is really testing

Whether the candidate can run a retention investigation rather than guess at causes. The discriminator is method: heap snapshot comparison across a repeated cycle, with a forced collection, rather than reading a memory graph and speculating.

Where the mechanism is taught