You dont mention your version - that's always very important info when bugs or behavior quirks are involved...
Sounds like you might have hit "In some cases, user view data was not properly written to the Tableau Server repository database, which resulted in incorrectly displayed user view statistics in the Tableau Server administrative views." Fixed in 9.1.8, 9.2.6 and hopefully 9.3.x
Thank you for your attention.
Sorry I missed it- our current version is 9.1.6.
Yeah, It might be a bug, but I got an answer, that it is expected based on Tableau Architecture......
I am not clear with this issue...
Based on the architecture every view goes thru vizql, which logs which be captured somewhere.
Thank you for pointing to release notes, it gives me some hope, that upgrade may solve the issue.