It is a limitation of a PWA. A native app (wrapper) will likely be coming though, and a custom Capacitor plugin could theoretically interface with the native API to switch out icons. Theoretically. No promises though :)

Quoting this comment by the dev

    • ryo@lemmy.eco.br
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      1 year ago

      The main issue is Safari, bugs in webkit bog everything down. And iOS is stuck with it.

    • BURN@lemmy.world
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      1 year ago

      No browser as far as I know. I installed the PWA and haven’t touched anything else.

      I’m on iOS exclusively with no plans to use a desktop interface