Seems the on_cancel={JS.navigate(~p"/<url>")} attribute in the resources’ generated index.html.heex is the culprit. It triggers a re-mount of the parent LiveView, hence the scroll position is lost.

For me, it’s fixed with on_cancel={JS.patch(~p"/<url>")}.

Update: should note that I wasn’t able to reproduce the behaviour when actually saving an entry (clicking “Save” button or pressing return), it only occurred for me when canceling out of the modal (clicking away or the “x” cancel button, pressing escape). I did notice that sometimes the scroll position was already reset as soon as the modal opened, but could not track that down.