It seems that a page image is not being generated for articles which are stubs e.g. have no subheadings. Not sure if this is a recent regression or existing behaviour that has never been documented.
List of steps to reproduce (step by step, including full links if applicable):
- Create an article with the following text:
Testss!!!s [[File:Tales serial.jpg]] [[File:Tales serial.jpg]] [[test]] [[test2]] [[test3]]
- ?action=info
Expected: page image present
Actual: no page image present
Add a section to the article e.g.
Testss!!!s [[File:Tales serial.jpg]] [[File:Tales serial.jpg]] [[test]] [[test2]] [[test3]] == Test == Text
Expected: page image present
Actual: page image present