Lightning Locker seems to be causing major issues with the jQuery selector and find actions (and by extension most other jQuery functions). Certain errors were arising due to jQuery 2.1.4 that are resolved by upgrading to jQuery 2.2.4. But jQuery 2.2.4 is generating the "Cannot redefine property:title" error. For some people those errors are resolved by using the correct ltng:require syntax, but that doesn't seem to be helping with these jQuery errors.
This seems closely tied to this issue, which shows how the error relates to the version of jQuery used.