As seen in the attached image, the confirm and cancel buttons in the beacon UI and the recipe book button use a blue highlight texture instead of a white outline, likely missed when the button texture was updated because these buttons use a separate texture (textures/gui/sprites/container/beacon/button.png and textures/gui/sprites/recipe_book/button.png).
Might also be intentional because these buttons are on gray backgrounds and blue stands out more than white.
I briefly checked other files called button but the only other one I found was the social interactions menu which is updated.
[media][media]
Thank you for your report!
We're actually already tracking this issue in MC-165979, so this ticket is being resolved and linked as a duplicate.
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