According to this https://code.google.com/p/chromium/issues/detail?id=136887 it is proper behaivor. What was before (when you can't inspect elements with "pointer-events:none") was a bug.
Chromium has tests for this fix: https://chromium.googlesource.com/chromium/blink.git/+/dfcf6a3782dcae5dd16baec94040b931b0791fa6/LayoutTests/inspector/elements/inspect-pointer-events-none.html