I'm getting an error in console when swiping slides while simulating Samsung Galaxy S8+ in Vivaldi (Chromium-based) on Windows 10 using Reveal.js 5.0.2. I haven't checked to see if it affects mobile interaction more broadly.

Uncaught TypeError: Cannot read properties of null (reading 'classList')
    at _t.deactivatePage (reveal.esm.cd96fbcf.js:13:28379)
    at Object.deactivate (reveal.esm.cd96fbcf.js:13:21463)
    at _t.deactivateTrigger (reveal.esm.cd96fbcf.js:13:28524)
    at reveal.esm.cd96fbcf.js:13:26152
    at Array.forEach (<anonymous>)
    at _t.syncScrollPosition (reveal.esm.cd96fbcf.js:13:25865)
    at _t.onScroll (reveal.esm.cd96fbcf.js:13:28829)

The problem appears to occur at this line:

page.backgroundElement is assumed to be an object containing a classList property, but it is null instead. I tried adding a null-check, but I'm getting a RollupError and don't know anything about gulp so it's a rabbit-hole I'm not prepared to dive into right now.