Wrong author image in some articles

After recently creating drafts for some articles I find that in some articles, instead of the author image, the image of the admin who created the draft keeps appearing. No matter what I do (change author, clear cache etc) the wrong image doesnt change.

For eg, this new article shows a wrong author pic of admin 1

https://hpathy.com/scientific-research/an-update-on-research-in-homoeopathy/

This article from the same author shows pic of admin 2

https://hpathy.com/cause-symptoms-treatment/homeopathy-for-tobacco-craving/

and this article shows the correct author pic

https://hpathy.com/homeopathy-papers/homeopathy-for-tinnitus/

What is happening is that if the draft is saved without selecting the author, it takes the admin creating the draft as author. Later even if we change the author, the author image doesn’t change.

I would appreciate some help to resolve this.

https://www.ads-software.com/extend/plugins/sem-author-image/