If you are in the water when the chat is open, the breathing gauge will not decrease

Thank you for your report!
However, this issue has been temporarily closed as Awaiting Response

Is this only happening on a Bedrock Dedicated Server? Which smartphone are you using? Could you please provide more details or/and media files. As such we have no repro of this issue.

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Cleaning up old tickets: This ticket had been set to 'Awaiting Response', but has not received a response from the reporter (~3 months+) so is being closed as Incomplete. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines which includes steps to reproduce the problem.

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📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki