In replies, Outlook no longer correctly shows images in an e-mail signature

[chucker23n1]

(Outlook Mac app)

We have a fairly straightforward e-mail signature, mostly text, but with our company logo in there.

1. If I send an e-mail with that signature, everything seems fine.
2. If someone replies to that, the logo is still there.
3. But if I reply to that, from the Outlook for Mac app [Version 16.97 (25051114)], the logo is gone; all I see is an empty rectangle as a placeholder. Both in Sent on the sender's side, as well as in the Inbox on the recipient's side (such as in Gmail).

If I write the same reply from the web app, it seems to work. It doesn't seem to be the specific image; I've tried a random different PNG, and that produced the same result.

Looking at View Source for the affected message, I'm pretty sure this is a bug on Outlook's end. The original image is attached and then referenced with cid syntax:

<img border="0" width="16" height="16" style="width:.1666in;height:.1666in" id="m_-548378914589535532Picture_x0020_3" src="cid:ii_196ed19ae274cff311" alt="signature_3371190845">

But then after replying, the URL is instead… a local path on my file system:

<img width="16" height="16" style="width:.1666in;height:.1666in" id="Picture_x0020_1" src="file:////Users/…/Library/Containers/com.microsoft.Outlook/Data/Library/Caches/Signatures/signature_748268277" alt="signature_748268277">

Yeah, obviously that doesn't work.

I've already tried filing a support ticket, but, crickets. I also haven't found much on the web. Are signatures with images broken for anyone else?

 

[chucker23n1]

I've found a workaround. Not ideal, but appears to do the trick.

https://www.reddit.com/r/Office365/comments/1ja80eg/comment/mlx6032