Development page Sources: logos not displaying (sometimes)

[ojalaquellueva]

On Brad's machine from home ISP, dev version, logos for page Sources do not display. From Rethvick's machine, everything displays.

[ojalaquellueva]

Happening on all three installed browsers, on macOS Monterey 12.7.4:

Chrome 124.0.6367.119
Safari 17.4.1
Firefox 125.0.3