postMessage still broken on IE11?

Question

It seems that window.postMessage is still broken on IE 11 when the message is

• between a window and a child popup/tab with window.open
• when it\'s sent

Answer 1

I found, if I launch another window, launch my window, then close the other window, then I can work with my window just fine.

vvWindow0 = window.open("http://apsed4065:8047/virtualviewer/index.html");
vvWindow = window.open("http://apsed4065:8047/virtualviewer/index.html");
vvWindow0.close(); 

vvWindow.postMessage(message, 'http://apsed4065:8047');