Here’s a sub-thread of complaint and explanation from ~2 weeks ago. I suspect the difference is when an individual device’s cached copy of some scripts update to current. And I suspect there’s an interaction between device screen size, text size, etc.
Here’s another thread on point from early Nov.
I suspect this thread belongs in Site Feedback since it’s a Discourse technological question, not an rules or mods question.
The OP here may just now be seeing it, but it isn’t new to the rest of us.