From a firewall, block the computer access to internet, or disconnect the network cable.
Add a media URL to texture and drag the texture to a face of a primitive.
No error is shown for the client. No error is shown in the server logs. The texture will show unrelated data.
Expected: An error of some form is shown to the client, preferably in the texture that was to be loaded. No bad data should be shown in the texture.
Reproducibility: 3/3