Grafana's graphic show wrong value on dashboard (but when I open to edit, it's correct)

Hello
I’m using grafana, zabbix and zabbix datasource on grafana, all in the last version.
I’m receiving the correct metrics, actually, my panels are polystat and time series graph. I’m monitoring some urls, and I expect the http code as a response. Polystat is showing the correct response, but the graphics are wrong. Basically, the graphs are showing me error like “252” when the correct code is “302”. I can see the correct data when I click to edit the graphs, it returns to normal when I open to edit, but when I return to dashboard, it’s showing me the wrong number again.
Help!!

My guess it could be some operation with the values like a average or sum.
Maybe when you edit it due to time restriction it shows different.
Post more details so people can help better.

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Thanks for your answer!!
I solved my problem, apparently it was a graph size problem. I’ve gone to “Query Options” and changed “Max Data Points” to 1000. It solved my problem and now the graphs are showing the correct http code responses!!

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