Overwritten numbers

On some dashboards (not all) I always get a strange bug: with gauge visualization new numbers not replace old ones like this: Screenshot_2021-03-18 Ломоносов-2 кратко - Grafana. Present ob FireFox and Chrome too.
I use VictoriaMetrics source, grafana 7.4.1. Live dashboard is here: http://a1.lom2.parallel.ru:8089/d/x8FaJxFMk/lomonosov-2-kratko?orgId=1&from=now-2d&to=now&refresh=5m
How cat I fight this bug?