Editor calls setData twice at load

[Alex-Dev]

Steps to reproduce ¶

1. In file "core/dom/domobject.js", at around line 45, modify function "getNativeListener()" by modifying the if statement that conditions the "domObject.fire()" call, such that it is preceded by a statement like console.log("Handling event:"+event).
2. In "plugins/wysiwygarea/plugin.js", at around line 321, at the beginning of definition of function "setData", put in a statement like console.log("In 'setData' at top");
3. Run any program that uses CKEditor. I am using the textarea/iframe type set-up, with five editors opening one right after the other.

Expected result ¶

When the "load" event occurs, "setData" should get called once.

Actual result ¶

After "load" finished, "setData" gets called a second time.

Other details (browser, OS, CKEditor version, installed plugins) ¶

For my five text areas, all five sequences of "load" then "setData" are finished before the next set of five "setData" calls begins.