The Features introduction makes one blanket promise: every change is personal and takes effect immediately without a reload. The controls below it do not all follow that contract.
- Comment AI is site-wide.
- Heartbeat changes require a reload before the running page uses the new rate.
- Native-window choices apply the next time that app opens.
When the introduction is wrong for several important controls, people cannot tell which individual descriptions are safe to trust.
Suggested wording
Most changes are personal and immediate. Site-wide or reload-required options are identified below.
Each exception should then say its own scope and timing. PR #581 makes that change and adds the missing notes to the affected controls.

The Features introduction makes one blanket promise: every change is personal and takes effect immediately without a reload. The controls below it do not all follow that contract.
When the introduction is wrong for several important controls, people cannot tell which individual descriptions are safe to trust.
Suggested wording
Each exception should then say its own scope and timing. PR #581 makes that change and adds the missing notes to the affected controls.