No response? I guess I need to provide with some details:
I run WordPress subdir multisite installation with version 5.0.3 and PHP 7.3.
Steps to reproduce:
- Go to any subsite and go to “Add New” under “Users”.
- For “Add New User” form, fill username, email and set “Role” to subscriber. Leave “Skip Confirmation Email” unchecked. Set at least one “Other Roles”
- Click “Add New User”, wait for the email and activate the account
- Check the user account, that account will only have the subscriber role
If however you have checked “Skip Confirmation Email”, then the account gets the roles from “Other Roles”.