Hello @KrissyL2 ,
I'm having trouble recreating the issue you're describing in both the social share and the social tab areas of your account. I was able to successfully schedule (and subsequently unschedule) posts through both functions.
If the issue you're referring to is in social share, is the email you're trying to share relatively new? Or is it over 7 days old? Facebook restrictions won't allow 3rd party systems like ours to make posts for content like this if it's over a week old from our end, and require you to manually link the email. Beyond that, without more info or screencaps of the issue occurring, I'm not sure how you'd be getting redirected to an email campaign's webpage version for either its social share or when making a fresh post in the social tab.
When you say its "repeating itself when you click a social icon at the top," where are you referring to? Are you referring to the social icons on the webpage version of the email or elsewhere?