The picture inside the app is the first picture within the article usually. However for the article metoprolol this does not occur? Wondering why?
Topic on Talk:Reading/Strategy/Kickoff
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If I'm correct, the logic for this is in Extension:PageImages, which job it is to filter and select an appropriate image from the page and provide that. In this case, i suspect that the image is every so slightly too small (probably in height) to be recognized as a good candidate. Alternatively it can be that it has trouble finding it inside this specific type of infobox.