I have just switched on "Raise window on Update" and this does make a Marked window come to the front - but a second later then the window is moved to the background again.
This is consistent and happens again and again on every update to the Markdown file. - Very annoying! It makes the "Raise window on Update" feature useless.
I am sure in the distant(?) past the feature had worked...
My environment
Marked: V2.6.46
macOS: V26.2