Problem with sharing from Page after upgrade

I currently have 3.7.1(build 3). Before the upgrade I could post a link in a Page, and that link would appear in the feed as being FROM THAT PAGE.

Now, after inserting a link, and selecting the PAGE name before sharing -- rather than my user name (both options are shown in the "post as" drop-down menu) -- it posts as my username and doesn't reference the Page at all.

I'd like to be able to post and share as the PAGE so people know it exists when they see it in the feed and can't figure out why I can't now, after the upgrade.