The bug
Upon opening the help menu (shown by clicking on your profile in the top left corner and clicking 'Help'), the links to the feedback sites are inconsistent:
Give feedback: Launcher: https://feedback.minecraft.net/hc/en-us/community/topics/360000958132-Launcher?ref=launcher
Give feedback: Minecraft Dungeons: https://aka.ms/DungeonsFeedback
Give feedback: https://feedback.minecraft.net/hc/en-us/community/topics/360001692331-Minecraft-Java-Edition-Snapshots?ref=launcher
Notice how only the Minecraft Dungeons feedback link uses a shortened URL. This does redirect to the proper link, but this is an inconsistency anyway.
This is caused by the fix of MCL-15714.
Yes there is a bug hiding here. It's not an inconsistency issue, rather than the shortened link is not allowing parameters to pass through. We'll look into changing this, thanks