This Person

Can confirm, Minecraft for Windows 10. After setting custom skin then closing/reopening the game usually 2-3 times, my skin resets to default and I once again need to set my skin. I use custom png skin, not store skins. Game version 1.16.1

Had similar issue with Sweet Berries and Potato, all links pointed here. I can give you more information as I think my issue can be somewhat related to this issue. I'm playing 1.14.30 but my server version is 1.14.32 and after planting an edible food, I can't consume it while pointing to the air. Animation plays but food item isn't consumed and hunger remains unchanged. To reproduce it:
1. Have low hunger.
2. Plant a potato or a sweet berry bush.
3. Point at air and consume it.
A simple workaround is to point at a solid, not interactable, block not further than 3 blocks from you, and then consume it.

I believe the same goes with carrots and other food you can plant.