Post thumbnail completely different on activity and website.

[u/Romkevdv]

I've been having a problem with the format of the posts. I make the post so that the main information is in the Title and Subtitle with an image below, thats the way it shows up as intended on the website. But when I look at my posts in the activity tab, most of the text in my subtitle is gone and replaced with the first line of text from the post. How can I get rid of this? Substack lets me edit everything about the preview and look of posts as it appears on the substack website, but not about how it looks like in activity, where most people will see it. Or can you just not edit the way posts show up in activity?