Wrong popup position when opening a popup from a microfrontend embedded in a workbench view

[danielwiehl]

Describe the bug

If embedding a microfrontend in a workbench microfrontend view and opening a popup from that microfrontend, the popup is not positioned next to the anchor.

To Reproduce

Steps to reproduce the behavior:

1. Provide microfrontend view capability
2. Provide microfrontend capability
3. Provide microfrontend popup capability
4. Add some content to the microfrontend view
5. Embed the microfrontend (provided in step 2) after the content
6. Open the popup from the microfrontend
7. See that the popup is not positioned next to the anchor

Expected behavior

The popup is positioned next to the anchor.