In March 2018, I created an approval Flow for "When A New Item is Created" in SharePoint. I used the approval template and filled in all fields needed, including the dynamic content Link To Item field. For months this flow has worked with no issues. Sending approval email to one person, who was always able to open the link directly from the Approval email and see detail of the item in the SharePoint list.

Last week, we noticed the Approval Email sent from Microsoft Flow, the link to Item was no longer active. Clicking on this link did nothing, no hyperlink was present any longer.
I've tried to edit the flow, reinsert the dynamic content for Link to Item, and have gone so far as to rebuild a new flow. Nothing has worked.
What has changed in Microsoft flow, and better yet, how do I correct this so the link to the SharePoint list item is active again?