To reproduce:

Use a dialog with a Richtext-Editor which the property images=true.
=> To keep it easy, just add a text/image component on an article-page.
Before doing:
Set /modules/standard-templating-kit/dialogs/generic/controls/text@images=true

Duplicate the node events-overview under demo-project/news-and-events.
Rename the duplicate to events.overview.
Add the text/image component.
Link to a magnolia-page which has in its path a node with a dot (like events.overview).
Publish all.

=> You will/should notice, that the link made with CK-Editor on the public instance is still linked to a page in author instance.