This is due to the welcome app, since it does not include tooltips it doesn't really need it.
That said, in made a pull request which improves bootstrap 4 support, one of the things I did was to include popper.js which serves the same purpose as tether in BS3 https://github.com/web2py/web2py/pull/1876 -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.