After upgrading the Multibranch Pipeline plugin from version 2.9.2 to 2.14 we noticed the following unexpected regression:

It is no longer possible to create custom views for multi-branch pipeline jobs, and any custom views previously created are gone.

The multi-branch jobs have now a single "Branches(N)" view without the possibility to modify this view or create a custom one. We had custom views defined for such projects with additional columns such as "Test Result" from the "Extra Columns Plug-In" and that worked very well.