CSH (map ID) not working if Bookmark is used at a Heading

I'm using 2022.0.346, publishing as responsive html5 with azure blue skin.

In a topic, I have a mini TOC, and a few headings. I created a bookmark at the end of a particular heading. The issue is - if  I use that bookmark, added to a Map File, and gave it a map ID (ex: www.domain.com/abc/index.htm?rhmapno=123), it doesn't go to the location of the heading, but it goes to the mini TOC instead. Any help is greatly appreciated.