Right now, it seems that I can’t reproduce the issue. I only see the “OpenStreetMap” menu text.
I don’t believe the window width was a factor when I saw this issue yesterday. The screenshots I posted were both taken from the same Identify modal. The only difference was that I zoomed in and out a couple times in between those screenshots.
OK, will do. I did see “OSM” appear at some point today, but I forgot to pay attention to the context. In positive news, the menu block appears to have expanded horizontally to accommodate the “OpenStreetMap” text.