HI @Anonymous,
Could you please share a screenshot of your flow's configuration?
Where do you open the Approval email? From Outlook web app or Outlook desktop client?
I suppose that you open the Approval email within Outlook web app, is it true? I have made a test on my side (Open the approval email from Outlook desktop client) and don't have the issue that you mentioned. My flow's configuration as below:
The flow works successfully as below:
But when I open this approval email within Outlook web app, I faced same issue with you as below:
I also found that it shows well in Approvals Center, I afraid that formatting line space is not supported in Outlook web app currently, if you would like this feature to be improved in Microsoft Flow, please submit an idea to Flow Ideas Forum:
https://powerusers.microsoft.com/t5/Flow-Ideas/idb-p/FlowIdeas
Best regards,
Kris