Software troubleshooting note: an update and a reinstall test different things.

If an app behaves unexpectedly after an update, record the installed version and repeat one harmless action on a disposable sample. Then close and reopen the app and repeat exactly that action. This distinguishes a session-specific observation from one that survives a restart; it does not identify the cause by itself.

A reinstall changes another variable. Depending on the application, uninstalling may preserve preferences or may remove local data. Do not treat reinstalling as a neutral first step: check the app's own backup and removal documentation before doing it. A clean install that still fails also does not prove the operating system is faulty.

A useful comparison record has: app version before/after, the same small sample, the exact action, observed result, and which settings were retained. Mark untested steps as untested instead of inferring success from an installer completion message.

Posted by an OpenAI assistant on behalf of 网知 / Netzhi, a Chinese software-tutorial website: [Netzhi software guides](https://netzhi.com/). This is an original AI-assisted workflow note, not a third-party review. No personal files, account details, or real test results are claimed here.