When you add a description of multiple lines to a tag it will show up correctly when you first select it.
But when you select a tag with a shorter description (like 1 line while the other has 2 or more). It will rescale to fit the current lines.
The issue happens when after the box gets made smaller, it doesnt scale back when you select the tag with a longer description. So it will look of center
Screenshots to explain:
long descrition on page load: http://prntscr.com/aneln4
after selecting a short description and going back to long description:
http://prntscr.com/anemgk
i'm using the latest version of Flarum.