Graph loads, then content changes after several seconds

I’ve noticed today that I’ve opened a chart and seen the graph display. Then after a number of seconds, the content of the graph has changed without me doing anything even moving my mouse. For example more spikes will suddenly appear in the data series, the displayed Y-axis range will change - I don’t mean it has updated with a new sample but the whole shape of the graph changed.

It looks like a data loading issue, i.e. the chart is displaying before all data is present. Is this either intended functionality or a known problem in Grafana 8.1? It’s quite disconcerting but somewhat hard to diagnose.

that sounds very weird. sorry

can you take a screenshot and / or check the browser’s dev console / netword tab when that happens?