In the new update of macOS 26 Tahoe, I have noticed that on my MacBook Air M3, I am not getting a warning when my battery is low or when it's about to go to sleep. My MacBook is just turning off without warning.
macOS 26 Tahoe - Battery warning
Our engineering teams need to investigate this issue, as this might indicate an issue with macOS 26.
We'd greatly appreciate it if you could open a bug report, include crash logs and sample code or models that reproduce the issue, and post the FB number here once you do.
Bug Reporting: How and Why? has tips on creating a successful bug report.