BYOND Version:515
Operating System:Windows 10 Home
Web Browser:Firefox 124.0
Applies to:Dream Seeker
Status: Unverified

Thus far we've been unable to verify or reproduce this bug. Or, it has been observed but it cannot be triggered with a reliable test case. You can help us out by editing your report or adding a comment with more information.
Descriptive Problem Summary:

After creating an <img src='\ref[I]'> where I is an icon, all future images using this feature become blank

Numbered Steps to Reproduce Problem:
1. Add a dmi file with any icon state.
2. Send a user an img with src set to \ref of an icon object

Code Snippet (if applicable) to Reproduce Problem:
usr << "<img src='\ref[icon('iconfilehere.dmi', "iconstate")]'>"

Expected Results:
The user sees an icon in their browser output

Actual Results:
They don't, and all future usages return a blank image

Does the problem occur:
Every time? Or how often? Every time
In other games? Unsure, tested in SS13
In other user accounts? Yes
On other computers? Unsure

When does the problem NOT occur? Did not find a way

Did the problem NOT occur in any earlier versions? If so, what was the last version that worked? (Visit to download old versions for testing.) Tested with 515.1635

Workarounds: None that I know of

I'll need a test case for this. Your code snippet is actually not workable, because you single-quoted the icon state.
Lummox JR changed status to 'Unverified'