Hi there,
I have seen somebody reporting the same issue in the developers forum, but I couldn't reply to the same thread since I don't have a developer membership.
I just updated to the latest CB version and it worked fine. But then right after that I updated CB Conditionals to the latest nightly build and the problem started. I believe it is a conflict with CB Conditional plugin.
I tested with protostar template, JCH optimize and other third party plugins off and the problem persists. No explicit Javascript errors on the console.
Please help.
PS:
I just noticed that the field that was using CB Conditional is also messed up and not following the rules that it was following fine with the previous version of CB Conditional.
Definitely a problem with CB Conditional - by disabling CB Conditional the cancel button in profile edit starts working again
PS2:
CB Conditional is also breaking the default Date layout with dropdown for year,month and date. When Cb conditional is enabled I only see a text input field with the date in format YYYY-MM-DD. If I disable CB conditional i see again the drop downs for year, month and day