Litmus tests for ios devices show columns stacking according to the media queries in the code and they match my iPhone's behavior. Android phones used to show the same, now they seem to display the behavior of desktop devices, seeming to indicate the code is not responsive, when it is. The tests labeled Android 5.1 and 6.0, which used to work well with media queries, now show a desktop-like behavior. The only Android phone I have access to, an old Galaxy S, shows the correct, stacking columns. So, what's going on with the tests? Is anyone seeing the same thing?