When I import a Minecraft skin, it keeps telling me that the skin is invalid or corrupted, and it turns out invisible and can't be reversed

Thank you for your report!
We're actually already tracking this issue at MCPE-50094, so I will resolve and link this ticket 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.

Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki