I'm not able to access any worlds I've created that I left while in the nether. When ever I try to go in them, it stays at 99% Generating World. I've tried making copies and making copies of the copies, nothing works.
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Thank you for your report!
We're actually already tracking this issue at MCPE-44815, so we 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.
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