Sometimes I have to hit "refresh" to see the changes after clicking History

## Issue

On one of my monitored sites, the first time I click the **History** button after changes are detected, no changes are shown on the snapshot page (no red/green).

I have to hit my browser's "refresh" and then the changes suddenly appear. So far, it only seems to happen with this one page.

The URL is https://tunnelbroker.net/status.php

I'm using 1 "Extract text" Filter: `/tserv.*, ?US.*/`

Everything else is fully "defaults".

Any idea what could be going on here?

## Versions

- CDIO ~~v0.54.4~~ ~~v0.54.7~~ v0.54.9
- Chrome v147.0.7727.56

Start by reproducing the issue in Chrome with https://tunnelbroker.net/status.php, the Extract text filter `/tserv.*, ?US.*/`, and default settings. Compare the first History click with a browser refresh; done means the snapshot consistently shows the red/green changes without requiring a refresh.

Written by the indexing model from the issue text.