Windows 8.1 related problem? Keys Method?

Hi,

I have the same problem with TestComplete 10.6 and IE11. Simple example of the test:

function Test1()

{

  var textarea;

  Browsers.Item(btIexplorer).Navigate("http://www.w3schools.com/tags/tryit.asp?filename=tryhtml_textarea");

  textarea = Aliases.browser.pageWwwW3schoolsComTagsTryitAspF.frameIframeresult.textarea;

  textarea.Click(264, 54);

  textarea.Keys("[Enter]the quick brown fox jumps over the lazy dog");

  textarea.Keys("[Enter]the quick brown fox jumps over the lazy dog");

}

results in textarea being populated with the following:

he quick brown fox jumps over the lazy dog

the quick brown fox jumps over the lazy do

some letters are missing. There is NO error or suspicious message logged. The only additional information I get is the following:

'[Enter]the quick brown fox jumps over the lazy dog' was sent as a keyboard input to the following window or control.

Tested object:
Aliases.browser.pageWwwW3schoolsComTagsTryitAspF.frameIframeresult.textarea
(Sys.Browser("iexplore").Page("http://www.w3schools.com/tags/tryit.asp?filename=tryhtml_textarea").Panel(0).Panel(1).Panel(0).Panel(1).Frame("iframeResult").Textarea(0))

I'm running my tests using Win8.1 on 2 completely different Virtual Machines. One VM is Parallels on Mac Yosemite and the other Windows Hyper-V. 

I was trying to solve the issue in many different ways but none worked :/. Please help!

The same question on stackoverflow: http://stackoverflow.com/questions/31785691/testcomplete-web-module-keys-method-in-ie11-missing-some-letters