Duansg opened a new pull request, #4161:
URL: https://github.com/apache/hertzbeat/pull/4161
## What's changed?
close #4156
when paging through the monitor list, the previous page's monitors lingered
as greyed-out "unavailable" rows on the new page until the next auto-refresh.
`reconcileMonitorStates()` ran on every load. It treats any monitor missing
from the new response as removed and fades it out for 5s — correct for the
2-minute auto-refresh, but wrong for pagination, where the previous page is
naturally absent and got misflagged as "disappeared".
## Modification details
Reconciliation now runs only on auto-refresh (sync()). Pagination and other
reloads use a new resetMonitorStates() that replaces the list directly and
clears pending grace timers, so no stale rows carry over.
## Checklist
- [x] I have read the [Contributing
Guide](https://hertzbeat.apache.org/docs/community/code_style_and_quality_guide)
- [ ] I have written the necessary doc or comment.
- [ ] I have added the necessary unit tests and all cases have passed.
## Add or update API
- [ ] I have added the necessary [e2e
tests](https://github.com/apache/hertzbeat/tree/master/e2e) and all cases have
passed.
## Effect
user-initiated actions (paging, delete, enable/disable, import) apply
immediately; only the background auto-refresh keeps the graceful fade for
externally-removed monitors.
<img width="1350" height="626" alt="Jun-18-2026 17-51-27"
src="https://github.com/user-attachments/assets/48c5c5b8-ab7e-4ba9-b4ee-9cdd44d1f611";
/>
> Fade-out effect
<img width="1704" height="576" alt="capcap-260618-164850"
src="https://github.com/user-attachments/assets/04b73809-38b4-48e6-9c00-1515574a1889";
/>
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