FunctionVoid/fabric.js — comment on commit 0756ffed9510e53714c483420a06f873f8dcacba
File:  line 0
By FunctionVoid:

needed to add this._finalizeDrawingPath(); to _enlivenDatalessObjects to update canvas without clicking. see: http://jsfiddle.net/rkP3p/
canvas will not be updated until clicked.