Ahh! This is the fix, I could not find these settings. It looks like the old share button was made into CopyLink, so I removed that one, and added the share from the menu below.
Now I have the full share button back on each post:
Also, I prefer a a share icon rather than the default link one, so in my custom component for my site, in the Head I include:
// icon substitutions for share buttons
api.replaceIcon('d-post-share', 'external-link-alt');
api.replaceIcon('d-topic-share', 'external-link-alt');