[1.8] IE11 bug: Unable to get property 'nodeType' of undefined or null reference

[web-padawan]

Description

This bug happens in IE11 when parsing some pages. Looks like a bug related to elements composition.

SCRIPT5007: TypeError: Unable to get property 'nodeType' of undefined or null reference

The only thing I have right now is the following call stack:

at Polymer.Annotations._parseNodeAnnotations
 at Polymer.Annotations.parseAnnotations
 at Polymer.Annotations._parseTemplate
 at Polymer.Annotations._parseChildNodesAnnotations
 at Polymer.Annotations._parseElementAnnotations
 at Polymer.Annotations._parseNodeAnnotations
 at Polymer.Annotations._parseChildNodesAnnotations
 at Polymer.Annotations._parseElementAnnotations
 at Polymer.Annotations._parseNodeAnnotations
 at Polymer.Annotations._parseChildNodesAnnotations

Steps to Reproduce

I didn't manage to localize this bug yet. Reproducing migh require lots of nested components.
Interestigly the UI doesn't get broken, though. I can see the components and interact with them.

Browsers Affected

• Chrome
• Firefox
• Edge
• Safari 9
• Safari 8
• IE 11

Versions

• Polymer: v1.8.1
• webcomponents: v0.7.24

[dfreedm]

Can you provide a link to some example? It is really the only way to help diagnose the issue.

[web-padawan]

Seems to be the same as #2682. Will try to create a reduced test case.

[web-padawan]

Closing this as no longer relevant. In case someome faces this issue with Polymer 1.x, the problem most likely was in the old version of the template polyfill.