Why is bounce rate in Google Analytics 0%?

On some sites the bounce rate in Google Analytics was 0% for all sources. No matter which period I choose (1, 7, 30 days). Though earlier all was normal. And if you look, for example, for the data year, the performance is not equal to 0.
According to Yandex Metrics indicators at the same sites at the same time not 0-tions.
It is clear that the bounce rate is calculated in the search engines differently. But to 0 - this is weird and more like a lie.
What could be the reason?
April 19th 20 at 12:09
1 answer
April 19th 20 at 12:11
in the curvature

space, owner, or Analytics
you can read more: how to identify the cause, how to fix? - reagan.Gutmann commented on April 19th 20 at 12:14
debugging in the browser to see what is sent, check in Analytics - what it is, etc.

any reason

you can see that it is neestestvenno behavior - look for where that is not configured / working - Aubrey_Gulgows commented on April 19th 20 at 12:17

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