Display issues inside outlook

There are display issues with the customer happiness rating buttons within the Outlook Desktop app. The problem does not exist within the web app, which is nevertheless critical, since Outlook as a desktop app is very widespread and is used almost everywhere (for Germany, see these statistics). Below are two screenshots showing the buttons within Outlook, once in the web app and once in the desktop app.

Please find a solution so that email content is also displayed correctly in the desktop app.

Thank you and best regards,

Sven