BBC iPlayer 'artwork' missing

OK, it's a minor thing, but lately BBC iPlayer (v1.3.1a3) has ceased displaying the graphic for the stations.

Restarting LMS (v7.9.0 15th July) does not fix; no relevant-looking errors in the server log.

Is this known about / for any known reason? Have the BBC been changing things their end again?

TIA.