Failed to execute 'observe' on 'MutationObserver'

[allthesignals]

Similar to #154, but not exact:

Clicking the dropdown causes this: Uncaught TypeError: Failed to execute 'observe' on 'MutationObserver': parameter 1 is not of type 'Node'.

Versions:
"ember-power-select": "2.0.2",
"ember-source": "~3.0.0",

Will try bumping a few versions...

See full log:
consolelog.txt

[jaurand]

I get the same error unless I have renderInPlace=true