List of steps to reproduce (step by step, including full links if applicable):
- visit the following page on an Android device of 360px width: https://commons.m.wikimedia.org/wiki/File:%D0%A7%D0%B5%D1%80%D0%BD%D1%96%D0%B2%D0%B5%D1%86%D1%8C%D0%BA%D0%B8%D0%B9_%D0%BD%D0%B5%D0%BA%D1%80%D0%BE%D0%BF%D0%BE%D0%BB%D1%8C._%D0%9D%D0%B0%D0%B9%D0%B1%D1%96%D0%BB%D1%8C%D1%88%D0%B8%D0%B9_%D1%83_%D0%84%D0%B2%D1%80%D0%BE%D0%BF%D1%96_%D1%94%D0%B2%D1%80%D0%B5%D0%B9%D1%81%D1%8C%D0%BA%D0%B8%D0%B9_%D1%86%D0%B2%D0%B8%D0%BD%D1%82%D0%B0%D1%80.webm
- notice the video thumbnail extends way off the screen instead of being scaled to fit.
- in particular, notice the the Play button is off-screen, seriously affecting usability.
I suspect the WLM banner is somehow at fault.
See screenshots: