I've been trying to play the Sonic DLC for Bedrock on PC
but I have a 21:9 monitor and I play in fullscreen, and for some reason playing it like I normally do, then restarting my computer causes Minecraft to not only "not" display in fullscreen again after rebooting like it's supposed to, it also plays the Mojang logo and then shows nothing, just a black screen, causing me to have to reinstall Bedrock every time.
Thank you for your report!
We're tracking this issue in MCPE-129319, 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.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki