Vanishing graphs (randomly)

I have build a dashboard containg 12 graph panels (old) and most often everything works fine. The problem is that from time to time some graphs are missing and “no data” is displaying (typically on one or two of them).
It looks like below (part of whole dasboard):

Data source is InfluxDB.
There are no any other errors.
It seems that query is good configured, because data are displaying and only sometimes vanish for some reason.
Is this some bug or something else?