I’m pretty sure it was not like that before
; it might be a side effect of the post-menu conversion to Glimmer (unsure). Also, you don’t see the issue immediately since the Reactions plugin is often installed.
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The visual disparency on hover doesn’t feel good. (happens only when liked)

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The pending number size slightly makes a height disparency on the buttons. You might need to adjust the padding/size.

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A last one, less noticeable. If you unify the buttons, I think it will look better/consistent without the radius in the middle.
vs
Tested without plugins and on the latest Discourse version.

