Probably app specific formatting thing? Jerboa had a similar issue a while ago, but it went away after it was updated

Happens randomly for me recently too.

I'll go in and out of the post and it changes back and forth. Actually didn't notice at first.

Odd, I tried that post and I don't have that issue. It could be something specific to an 'Appearance' setting. I'm using "Cards" for my default view.