Graph noticeably get cut from the right on 5m,15m relative time ranges

[omega]

Hi All.
I’m getting some strange behaviour in graph visualisation after upgrading from version 5.4.2 to 7.5.5
Suddenly if I set 5m or 15m relative time range on any graph, it gets cut off on the right:

Time is synchronised cross all prometheus/grafana/desktop environment.
I do not observe same behaviour on our old ver 5 Grafana with same datasource/datasource configuration.
If is set min interval to 1s problem disappears, but prometheus taking a hit with bigger queries of cause.
Our scraping interval is around 25s.
Any clues why this happens ?
I will be grateful for any clues.
Thanks.

[omega]

No one had/has same problem ?

[mattabrams]

/hi @omega,

On your graph, it looks like about 15 seconds have elapsed. Your scrape interval is 25 seconds. This looks like standard UI behavior:

https://play.grafana.org/d/000000012/grafana-play-home?orgId=1&editPanel=2&from=now-5m&to=now