Advertised MySQL version in free version of Scotch Box incorrect?

[IRCraziestTaxi]

https://box.scotch.io/ says:

MySQL Stuff
Feature | Free Version | Pro Version
Version | v.5.7 | v.5.7.21

So I thought I was going to be running MySQL 5.7.

However, I was getting some obscure issues with EF Core migrations regarding incorrect syntax. When I checked the MySQL version on the running vagrant instance, I got 5.5.55.

5.5 works for me, but I spent hours trying to figure out why I was getting strange errors that my colleagues (running MySQL 5.6) were not getting because 5.7 was advertised, so it did not occur to me to base my searches on MySQL 5.5.

Is this an oversight?