Jquery version 3.2.1 Pjax problem

I wanted to upgrade my platform to the more recent 3.2.1 jquery loaded from CDN :https://code.jquery.com/jquery-3.2.1

However when I do that I get errors like this

jquery.pjax.js:981 Uncaught TypeError: Cannot read property 'push' of undefined

    at jquery.pjax.js:981

    at jquery.pjax.js:991

caught TypeError: jQuery(...).pjax is not a function

    at j (jquery-3.2.1.min.js:2)

    at k (jquery-3.2.1.min.js:2)

Any ideas ?

Can I upgrade or should I stay with 2.2.4 where everything is working

Well, stay on the one that works and report about updating issues to issue tracker.