StreetView panorama does not render in Shadow DOM

[stillgbx]

Description

StreetView panorama does not render in Shadow DOM.
Rendering is ok in Shady DOM.

Expected outcome

The StreetView panorama.

Actual outcome

Nothing, the "map" div seems to be deleted.

Live Demo

https://jsbin.com/quyaji/edit?html,output

Steps to reproduce

• Set the dom Polymer option to 'shadow'.
• Add google-streetview-pano custom element.

Browsers Affected

• Chrome
• Firefox

Additional notes

The same result occurs when using google-map custom element and switching to StreetView, with the default control or programmatically.

[stillgbx]

see also GoogleWebComponents/google-map#314

[robdodson]

I think this might be a Maps API issue and have reached out to the team to see about getting https://code.google.com/p/gmaps-api-issues/issues/detail?id=11109 reopened

[robdodson]

Looks like https://code.google.com/p/gmaps-api-issues/issues/detail?id=11109 has been marked as Accepted and the team is now working on it. The bug is because the Maps API needs to measure the node ahead of time but it can't tell that the node is connected to the DOM already (it's using document.contains(), which doesn't cross the shadow boundary) so it attaches the node to the DOM itself but after doing so it's unable to insert it back into the Shadow DOM. Looks like there may be a solution but they're still working on it. I'd suggest subscribing to that CRBug for updates.

[ebidel]

It looks like this is marked as fixed internally. Not sure when that will actually land in a maps api v3 release though.

[robdodson]

Looks like this is fixed if we switch to the v3 experimental api
https://code.google.com/p/gmaps-api-issues/issues/detail?id=11109