Nested <Element /> causes an error

[eduludi]

Hi,

I'm trying to implement something similar to what <Card /> in the basic example does: having a block that can be moved around with two defined areas where other blocks can be added.

I replicated what I'm trying to achieve here: https://codesandbox.io/s/craftjs-issue-with-nested-element-dpnsd

For some reason, event when I double and triple check everything, I cannot make the Card component work.

When trying to add a layout component, like Card or Row, that have a nested <Element canvas id="some-id" is={Component} />, it throws an error:

TypeError: Cannot assign to read only property 'parent' of object '#<Object>'
    at Object.addLinkedNodeFromTree

I'm not sure of this is an issue or if I'm doing something wrong. Hope someone can give some hints. Thanks!

And thanks to the devs and maintainers for this cool project.

[eduludi]

Sorry, l overlooked this issue, and it matches with what I'm also experiencing here.