Steps to reproduce the issue

Try for example the reCaptcha plugin. The parameters should change when you switch between version 1.0 and 2.0.
For modules one could test the login module (show greeting) and for templates the protostar template (use Google font)

Expected result

Available parameters change

Actual result

Nothing happens.

System information (as much as possible)

Current staging

Additional comments

Pinging @andrepereiradasilva since there were recently some PRs merged from that deal with showon.