Types saves an invalid value in user fields

Symptoms

When saving user fields (other than checkboxes one) in Types 2.2.7, a wrong value is stored in the database.

Workaround

This is going to be fixed in the next release of Toolset Types.

In the meantime, please download this patch, extract it and overwrite the file checkbox.php in types/library/toolset/types/embedded/includes/fields/.