Why double app updates on Google Play?

Question

Google Play

I noticed strangeness when updating applications in Google Play.
Some applications are updated several times, but there is no version change.
For example, the Moscow Metro was released on November 17, I immediately updated to version 3.0.0.
Now, on December 2, it was again asked to be updated.
I went into the information, and it shows that a new version 3.0.0 was released on November 17 and offers to update again.
In fact, it suggests reinstalling the application.
Is this some kind of bug?

Answer 1

The version you see is just a line. The version number is given by a number that won't tell you anything. Increasing the line for the user is a voluntary matter and is not forced. In addition, it often happens that some bugs become visible only when the application is rolled out to a large percentage of users, and therefore it may be necessary to make a hotfix and upload the same version.