Even if you edit the world thumbnail, it cannot be displayed as if there is no screenshot. In fact, the screenshot is saved.
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3.Observed Results:
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We do not have enough information to reproduce this issue.
Please include the following information to help us understand your problem:
Steps to Reproduce:
1. (Explain what needs to be done for the issue to happen)
2.
3.Observed Results:
(Briefly describe what happens)Expected Results:
(Briefly describe what should happen)
Please also attach any needed commands, add-ons/behavior packs, data packs, resource packs, screenshots, videos, or worlds needed to help reproduce this issue.
Refer to the Bug Tracker Guidelines for more information about how to write helpful bug reports. Bug reports with insufficient information may be closed as Incomplete.
This issue is being temporarily resolved as Awaiting Response. Once the requested information has been delivered, the report will be reopened automatically.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support (Technical Issues) – 📧 Microsoft Support (Account Issues)
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
I was also affected on Windows.
Steps to Reproduce:
This may or may not be consistent.
Open the Minecraft Preview game, wait until you are fully signed into your Microsoft account. Make sure you have at least one screenshot in your profile.
Go to edit an existing world.
Press the bottom-left button that is on the world thumbnail.
Select "Change thumbnail".