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Only on FX: id="adv" 'hides' the element
This appears to be confined to FX. (FX 110.0.1 (64-bit) on Linux) Elements like input or output are hidden if id the ID is set as "adv". What is going on - is this a gotcha? Easy workaround of course but that's not the point.
<meta name="description" content="test"> <meta name="viewport" content="width=device-width, initial-scale=1"> <meta charset="UTF-8"> <title>test adv</title>
Wybrane rozwiązanie
It looks like the ad blocking add-on is doing it. Do you have uBlock Origin or Adblock+?
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Wybrane rozwiązanie
It looks like the ad blocking add-on is doing it. Do you have uBlock Origin or Adblock+?
Quite right. Never would have guessed. Using AdBlocker. That really does seem to be a gotcha good for screwing up sites.