Toggle Sprint is getting turned toggled off whenever you open your inventory, chest or any other kind of things which can be opened in the game.

This also happens with toggle sneak

Is your “Sprint” key bind set to a mouse button?

_{This issue is being temporarily resolved as Awaiting Response. Once the requested information has been delivered, the report will be reopened automatically.}

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Uhh I accidently wrote CTRL key instead of my mouse key

Thank you for your report!
We're tracking this issue in MC-301281, so this ticket is being resolved and linked as a duplicate.

That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.

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Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support (Technical Issues) – 📧 Microsoft Support (Account Issues)
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki