I have it set up like this too so that is why I am confused!
The image fetched in a chat application has its own style that may enlarge any smaller image to become full in chat bubble. Theme and WordPress system itself doesn’t any control on it.
The possible solution might be specifying the Facebook Open Graph Image with YOAST SEO plugin. Use a new image that have quite large blank space surround the logo.
hmm… it is happening when I send the link through text message too. I tried resizing the icons to be smaller it did not seem to have an impact. Any thoughts?
Is that slide text content? If so, please open a new topic for that question. Avoid asking multiple question at once.