zone.js v0.8.13 Produces Extensive Zone errors in Unit tests-- 'Unhandled Promise rejection:', 'Cannot create property '__creationTrace__' · Issue #832 · angular/zone.js

Using: zone.js 0.8.13 Node 7.10.1 Angular 4.2.6 rxjs 5.4.2 karma 1.7.0 Typescript 2.3.4 If I use zone.js 0.8.12 my 111 Client side unit tests work fine. After upgrading to zone.js 0.8.13 I get ...