Twitter card issue

Has anyone had any issues where their Ghost blog’s twitter card, either for the home page or for a post unfurls for some Twitter accounts, but not for others? For the life of me I cannot figure this out.

I believe I have everything correctly set up for the meta data and social cards in my Ghost settings (in the sense that the preview looks great. I also ran the URL to my homepage in the Twitter card validator and it returns the desired result:

However, when I try to post the link from my account, it only posts the URL, without the card:
Screen Shot 2020-01-19 at 8.47.37 PM

Curiously, if I post the same URL from another account, the card DOES work:
Screen Shot 2020-01-19 at 9.38.38 PM

For the life of me, I cannot figure WTF is going on… If I tweet a link to one of my blog posts from my own account, those Twitter cards DO work… very strange…

I have no idea why this would be happening, but I can assure you it’s nothing to do with Ghost.