When going to the activity page for any user, the expand/collapse button on larger posts doesn’t work. Clicking it will not expand the post, and only turns the button around and moves it to above the link to the topic. This happens both on desktop and on mobile.
Can you repro this @jomaxro?
So maybe a regression here @eviltrout?
Pedantically, not a regression because “collapse” is a new feature I added. I just didn’t style it properly in the master branch 
https://github.com/discourse/discourse/commit/55e5cfcc679acac94e802feba7ab2cc65969f2bc
This fixes the broken expansion on the user page:
https://github.com/discourse/discourse/commit/7ecc15cad14556cc0c9d0a9056f043fd4bdbd403
