Open the Minecraft Launcher
Open the version changer (slidebar) on the left side of the launcher
Change to another version (Latest Snapshot, Latest Release, etc, doesn't matter which one)
Click on 'Settings' in the bottom left of the launcher
Return to the main screen (Labeled Minecraft: Java Edition)
Observe how the version has reverted to what it was before you changed it
Linked issues
Comments 4

Shouldn't this be a feature request - not a bug?
It's not like they tried to change it, and if it honestly bugs you enough to report it, you can easily change it yourself.
Right-click the shortcut and click properties. Then, click "change icon". You may need to convert the texture to a .ico format
This report seems a bit like a clout-chase.
Can confirm inΒ 2.2.2529 (Windows).

Thank you for your report!
We're tracking this issue in MCL-14797, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
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Can confirm in 2.2.2161 (Windows).