Actually, the Ib template appears independently in the little lists by the headers.

So, it seems the image will appear throughout a page if the template contains the image and also something else as part of its code (the Ib template) but not if the template contains only an image (the flagicon template and the nation templates (e.g.) in the first link).

(Note that the bug may be confined to just my computer and/or may just be temporary, in which case this all may not be very helpful.)

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