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Comment by lazycouchpotato | Hacker News Reader

Appears to still be rolling out progressively - something that the release notes left out. I'm on 138.0 and I don't have it either.

> All users should expect to see the feature by May 6, 2025. [1]

[1] https://support.mozilla.org/en-US/kb/tab-groups

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Seems weird to announce it as part of a version and then also as a rolling release. Seems like the message could be much clearer by saying it is part of the browser but may be disabled by default.

FWIW, I checked about:config. There's some options in here that seem highly relevant

  browser.tabs.groups.enabled              false 
  browser.tabs.groups.smart.enabled        false 
  browser.tabs.groups.smart.optin          false 
  browser.tabs.groups.smart.userEnabled    true

These are the settings I have by default that are not allowing grouping.

Changing `browser.tabs.groups.enabled` to `true` enables the feature. Though note that it can still be difficult to align them right such that they group. Presumably `browser.tabs.groups.smart.enabled` is the AI feature mentioned in the article. But I have no idea what `browser.tabs.groups.smart.optin` and `browser.tabs.groups.smart.userEnabled` are.

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