Here's what I did:
- Created new LDAP account using striker (strikertest2017-08-23)
- Requested membership in Toolforge
- Approved membership request using a privileged account
- Logged out of the new account's session (T144943: Groups and tools only refreshed at login)
- Logged in with new account
- Created tool (https://toolsadmin.wikimedia.org/tools/id/strikertest2017-08-23)
- New tool shows in user's list of tools
- Edit maintainers for tool
- User does not show in list of maintainers
- Added another user as maintainer
- Got notification that new user had removed new user as maintainer of tool
- Tried to add new account as maintainer from another session
- New account shows up in autocomplete list for adding maintainers
- On form submission, validation says "Select a valid choice. strikertest2017-08-23 is not one of the available choices." on submission