Outlook Mac - Glitchy formatting behaviour

I am experiencing the same frustrating behavior. I have noticed old font behavior when using the Hubspot add-in for MS Outlook for Mac. I have attached screen shots to describe the issues occurring. When composing an email message with the add-in logged-in, the new message exhibits these aberrant behaviors: 1. Tabbing to body from the Subject field skips 3-4 rows (orange box) 2. The first row of text is indented one space, but text is input in the correct font size (size 11 per my Outlook preferences) 3. Hitting a carriage return, the text suddenly enlarges to 12 point size (blue arrows) When I log off from Hubspot within the add in, the behavior is normalized with the beginning text within the body as 11pt font. See in both screen shots. This issue occurs on both my iMac and MacBook Pro. I am using Outlook for Mac v16.38 (although this behavior has been happening for awhile). I contacted support in July 2020 and got this response:

“This is unfortunately a known issue with the Outlook Extension on Mac, there is nothing that can be done on HubSpot’s side to correct this. The design part of this is from Microsoft. When they convert the message body to HTML and give it to our add-in, the formatting changes. This is their rich-text to HTML conversion process. The Windows version is better about these conversions, but, there is still a lot that happens to convert the rich text.
We advise that you use “HTML” format and not “Rich Text” format when composing emails if possible. Otherwise you can use the Outlook Web version from your browser. This issue should not be present there.”

My reply:

1. That’s disappointing and I find that dev response unacceptable as other CRM addins do not encounter this problem which points back to the developer. I suggest you push back on your dev team (I have experience managing my own developers and usually find this response doesn’t pass the ‘smell’ test).

2. As for advising me to use HTML and not RTF, there is no RTF formatting option in Outlook for Mac that I can find in preferences. Point me to where that is located. I don’t believe that is an option which makes me further doubt the dev response.

3. Lastly, why would Hubspot have a Outlook addin if it doesn’t work and tell its customers to just use the web version? The reason I switched from Apple Mail to Outlook for Mac was to use the Hubspot addin (I asked Hubspot for years to develop further for Apple Mail with Sidekick).

Frustrating and makes the add-in unstable and unusable for Apple users.