When making a change to a struct that is used in a blueprint some assets do not appear to save changes.
Additional notes: Using the Reload option (Right click struct > Assets actions > Reload) appears to resolve this issue.
Result: The Title Material will be reset to null/ none
Expected: The change would be saved
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-73194 in the post.