I think part of the problem is that this "feature" masks the need to properly understand scroll behavior (at least if you only use platforms that auto-hide scro

I think part of the problem is that this "feature" masks the need to properly understand scroll behavior (at least if you only use platforms that auto-hide scrollbars). Recently, we were doing a bug safari for a new product feature that was about to launch. I noticed that an element had a scrollbar when it shouldn't, and filed a bug. One of the developers picked it up, and first said "not a bug. I don't see it on my computer." I showed him the bug on my machine, and he looked at it for a few minutes before saying "I don't know how to fix it." I pointed out that the overflow-x was set to "scroll" in the CSS for that component, and he could just set it to "auto" to fix the behavior (since the scrollbar should never show up in normal usage of that feature). It turns out that he didn't even know "auto" existed.