In a support discussion titled ‘Thumbs-up Icon missing from post menu following changes,’ SouperC reports that after modifying reaction settings in Discourse 3.2.0.beta4-dev (specifically changing the default +1 reaction from heart to thumbs-up and adding ‘angry’), the reaction icon disappeared from all post action bars. While reactions still function via hover/click, the visual icon is missing. JammyDodger clarifies that the setting expects a Font Awesome icon name (e.g., thumbs-up), not an emoji name — adding this restores the icon. awesomerobot confirms this is a known point of confusion and has submitted a PR to update the setting description to clarify it requires a Font Awesome icon. After applying the fix, SouperC asks how to make the thumbs-up icon yellow. awesomerobot advises changing the love color in Admin > Customize > Colors to a yellow hex code like FABA32, which affects only the like button and heart/thumbs-up displays.
I made some changes for reactions and it appears I have broken something. The reactions icon is now missing from the post actions bar. This is affecting all posts vs just the first one which ive seen some older topic covering. A reaction can be performed by hovering\clicking over the area for the reaction however.
I’m on Discourse 3.2.0.beta4-dev and reactions 0.3 1b28bda
The changes I attempted to make were change the default reaction +1 from heart and add angry as an available reaction. As far as I can tell I think I’m too far down the rabbit hole to undo the changes after trying to “fix” it.
If you go to admin/customize/colors you can change the value for love to yellow there, this should only impact the like button and anywhere the heart (now thumbs up) would appear. A value like FABA32 should work pretty well. Google has a decent color picker if you’re looking to try a different shade (Google Search)
emoji is 
