Compose with bound view-model not rendered in IE11

[MaximBalaganskiy]

I'm submitting a bug report

• Library Version:
  1.4.0

Please tell us about your environment:

• Operating System:
  Windows 10

• Node Version:
  6.4.0

• NPM Version:
  3.10.3

• JSPM OR Webpack AND Version
  JSPM 0.17.0-beta.42

• Browser:
  IE 11

• Language:
  all

Current behavior:
Compose element with bound view-model attribute is not rendered

Expected/desired behavior:

• What is the expected behavior?
  Compose's view is rendered.
  Example code https://gist.run/?id=9c1630ecacc19e7a0b15739ab1191bc8
  (Unfortunately, gist.run does not support IE11)

• What is the motivation / use case for changing the behavior?
  There is a workaround - binding with attribute on a parent control sets correct binding context for the compose's view. Nevertheless, it would be nice to have it working the expected way since there is no such issue in Chrome, Edge, and Firefox

[StrahilKazlachev]

@MaximBalaganskiy Do you have any errors in the console?

[MaximBalaganskiy]

I cannot reliably reproduce the issue. The project has been switched to webpack recently, may be that has en effect. But I still got a couple of occurrences of this with no console output at all.