Outlook font corrupted in some point sizes, resets on close/open

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Kim

Member
OS Version(s)
  1. Windows
Outlook version
Outlook 365 64 bit
Email Account
Office 365 Exchange
Operating system::    Windows 11 Pro
Outlook version:     Microsoft 365 "Old"
Email type or host:    Microsoft 365

Hi, all!

We're using Outlook 365 with Microsoft 365 backending us, on Windows 11 64-bit. We're using "old" Outlook: Version 2407 (Build 17830.20166 Click-to-Run).

Seemingly randomly, but frequently, our standard font (Gotham Light) will become "corrupted" as shown here:

Font display problem.png

It's difficult to tell if the font is displaying properly but the spacing is bizarre or if the entire font is displayed incorrectly. However, I find that this is only the case in specific point sizes -- usually 11. If you forward the message, the "corruption" will continue to display until you select all of the text and apply another point size (10 or 12, say), at which point it displays fine. If you switch it back to 11, it looks weird again.

Closing and re-opening Outlook makes the problem go away, even on the same message. However, people are having to close and re-open several times a day due to this now.

I had briefly thought that this was being caused by a GPO for distributing the fonts while Outlook was running, but I've disabled all font-related GPOs and the issue continues.

Worth noting: We have both the TTF and OTF versions of this font installed. This seemed to be required to properly cover the bases so everything would display properly in both the Microsoft 365 standalone apps and the web apps. If we should go with just one, it's not clear to me which will cover all usage cases.
 
Is that happening on messages you write or messages you receive?

Do you have zoom set to 100%? Does changing the zoom level make a difference?

Both messages we write and messages we receive.

Different affected users have their zoom level set differently, but for the most part they're set at 100%. Changing the zoom level does not seem to make a difference.
 
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