I can reproduce this.
However, while I’m not sure, I think this is what is supposed to happen since I believe the field selector only lets you select a meta key. This is not related to the current object.
So what is happening is that you set the dynamic tag value to your user’s field key,url
for example.
But, you are editing a Post template, not a User template.
So when loading the Elementor post template it will search for the url
metakey in that Post object, not a User object.
In any case, as this is an Elementor dynamic tag issue, please report it at their support channel, we cannot change this behavior within our plugin.
Also, keep in mind that Elementor doesn’t fully support Pods yet. They have integrated some parts of Pods but it’s far from complete. I know @sc0ttkclark has reached out to them a few times but it still has little progress..
Cheers, Jory