The layout of the search bar in MobileFrontend is quite radically different from the one in normal operation. I'm not sure if this is intentional or not.
This is what it looks like when is unsupported or failed for some reason (e.g. network timeout for one of the JS requests when on a tablet)
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When disabling JavaScript explicitly, the search bar has an outline and the search submit button gets rendered (it seems this is hidden by client-nojs in the previous screenshot). But even then the search bar is oddly small
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It seems like both scenarios should result in the same rendering, and the search bar should be made wider. There's also no reason to omit the placeholder attribute in no-js mode. We don't do that in desktop either.
Successful page load by comparison:
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