The bug
When selecting "Not playable on this device" in either the Minecraft for Windows or Minecraft Dungeons tab, then clicking the "supported device" link, the user is directed to mojang://launcher/index.html. On macOS, this link is invalid, and the user is prompted to select an application with which to open this link.
How to reproduce
Open the Minecraft Launcher on macOS, and select the Minecraft for Windows tab
Select the large "Not playable on this device" button
Click "supported device"
❌ A prompt appears, informing you that the link is invalid
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Comments 3
Still happens on Linux too-- I'd say it's safe to assume that it won't get fixed on either platform until it gets fixed on one of them.
Happens on Linux as well.