Frustrating "Dashboard Style" layout cannot be undone

[ItsPronouncedZed]

Having spent a solid hour on a complex diagram, I hit the "Dashboard Style" diagram dropdown from the properties portal by mistake. Well, that didn't turn out well... 

Surely there must be a way to undo, or at least warn the user that the layout change cannot be undone.

https://sparxsystems.com/enterprise_architect_user_guide/16.0/model_publishing/using_dashboard_styles.html

Notes
The styles as a group are effectively permanent; once a diagram has had a style applied, you cannot change the layout other than by applying another style, and you cannot restore the original un-styled layout

[Geert Bellekens]

Pretty scary indeed.

I did manage to undo the changes by setting the dashboard style to none, and then closing and re-opening the diagram (without saving)

Geert

[qwerty]

Same when using Add Related and have the (default) Layout Diagram not unchecked. Lucky me that happend (happens) only for diagrams with few elements.

q.