During investigation of T143768 we discovered that certain browser extensions, for example MathML, result in output of 2 math equations being loaded on the mobile site as a result of lazy loaded images.
- In Firefox (desktop) install https://addons.mozilla.org/en-US/firefox/addon/native-mathml/?page=1#version-1.8
- Navigate on your desktop browser to https://en.m.wikipedia.org/wiki/Doppler_effect
- Notice how all images are duplicated
Is there anything we can do to remedy this?