Updating tracked variables throws an exception when the receiving element is in a pictureinpicture window

[deanylev]

Due to this check:

glimmer-vm/packages/@glimmer/util/lib/simple-cast.ts

Line 85 in 10eae74

if (node.ownerDocument !== document) {

while appending an element like this and then updating a tracked variable it relies on.

Wondering why that check exists in the first place, and whether we can make it a bit more robust to allow this case.

In my project I have simply patched out this line and it seems to work just fine.