Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
UI PanelsArea: what it touches
In DevelopmentKind: in v2.1.248,
In DevelopmentSection of the release
What
The shared UI state gained two new records: one for the current full-screen panel and one holding whether a blocking dialog surface is mounted and which kind it is. Groundwork for the dialog-timeout behaviour elsewhere in this release.
Evidence
onScreenBlockingDialog
Strings lifted out of the shipped bundle, so the claim above can be checked against them.