'Undo' button reverts back to system layout

Designing multiple graphics pages for a project and noticed if I accidently delete a line/graphic/text and hit the undo button, it resets back to system information page. Seems to only do it when re-instating a deleted item, rather than if you just edit an item. It also looses your zoomed profile on the display page screen you were on (if its set to 80% zoom for example) which is frustrating.

Appears to only do it on display pages, not in application logic. Iqan Design 7.04.

May not be a bug, but cant see why it would be beneficial to act like this?