From fa91f2de85509ebf943b94c41dcf5ae7c6030a73 Mon Sep 17 00:00:00 2001
From: "Daniel D. Beck" <daniel@ddbeck.com>
Date: Wed, 4 Feb 2026 20:19:44 +0100
Subject: [PATCH] Regress `display-mode`'s Baseline status

---
 features/display-mode.yml                 | 20 +++++-----
 features/display-mode.yml.dist            | 48 +++++++++++++++++++++++
 features/window-controls-overlay.yml      |  1 +
 features/window-controls-overlay.yml.dist |  1 +
 4 files changed, 59 insertions(+), 11 deletions(-)

diff --git a/features/display-mode.yml b/features/display-mode.yml
index d4e249e49ac..986ad2db70e 100644
--- a/features/display-mode.yml
+++ b/features/display-mode.yml
@@ -2,16 +2,14 @@ name: display-mode media query
 description: The `display-mode` CSS media query sets styles based on whether the web page is in an ordinary `browser` tab mode or another mode, such as `fullscreen`, `standalone`, or `minimal-ui`.
 spec: https://drafts.csswg.org/mediaqueries-5/#display-modes
 group: media-queries
+# TODO: https://github.com/web-platform-dx/web-features/issues/1971
+# Status changed: https://github.com/web-platform-dx/web-features/pull/3744
+# 2026-02-04 — low → false — Browsers inconsistently report the display mode depending on the app manifest, fullscreen API use, and other user interface conditions. This was not captured by support data previously.
+# References:
+# - https://github.com/mdn/browser-compat-data/pull/28868
 compat_features:
   - css.at-rules.media.display-mode
-status:
-  baseline: low
-  baseline_low_date: 2023-08-01
-  support:
-    chrome: "42"
-    chrome_android: "42"
-    edge: "79"
-    firefox: "47"
-    firefox_android: "47"
-    safari: "13"
-    safari_ios: "12.2"
+  - css.at-rules.media.display-mode.browser
+  - css.at-rules.media.display-mode.fullscreen
+  - css.at-rules.media.display-mode.minimal-ui
+  - css.at-rules.media.display-mode.standalone
diff --git a/features/display-mode.yml.dist b/features/display-mode.yml.dist
index 6d2a7459a9e..2282058fb41 100644
--- a/features/display-mode.yml.dist
+++ b/features/display-mode.yml.dist
@@ -1,5 +1,53 @@
 # Generated from: display-mode.yml
 # Do not edit this file by hand. Edit the source file instead!
 
+status:
+  baseline: false
+  support:
+    chrome: "47"
+    edge: "79"
+    firefox_android: "116"
 compat_features:
+  # baseline: high
+  # baseline_low_date: 2020-01-15
+  # baseline_high_date: 2022-07-15
+  # support:
+  #   chrome: "42"
+  #   chrome_android: "42"
+  #   edge: "79"
+  #   firefox: "47"
+  #   firefox_android: "47"
+  #   safari: "13"
+  #   safari_ios: "12.2"
   - css.at-rules.media.display-mode
+
+  # baseline: low
+  # baseline_low_date: 2023-08-01
+  # support:
+  #   chrome: "42"
+  #   chrome_android: "42"
+  #   edge: "79"
+  #   firefox: "47"
+  #   firefox_android: "116"
+  #   safari: "13"
+  #   safari_ios: "12.2"
+  - css.at-rules.media.display-mode.browser
+
+  # baseline: false
+  # support:
+  #   chrome: "42"
+  #   chrome_android: "42"
+  #   edge: "79"
+  #   firefox: "57"
+  #   firefox_android: "116"
+  #   safari: "13"
+  - css.at-rules.media.display-mode.minimal-ui
+  - css.at-rules.media.display-mode.standalone
+
+  # ⬇️ Same status as overall feature ⬇️
+  # baseline: false
+  # support:
+  #   chrome: "47"
+  #   edge: "79"
+  #   firefox_android: "116"
+  - css.at-rules.media.display-mode.fullscreen
diff --git a/features/window-controls-overlay.yml b/features/window-controls-overlay.yml
index f0edf2cde8d..ee27b5601a4 100644
--- a/features/window-controls-overlay.yml
+++ b/features/window-controls-overlay.yml
@@ -12,6 +12,7 @@ compat_features:
   - api.WindowControlsOverlayGeometryChangeEvent.WindowControlsOverlayGeometryChangeEvent
   - api.WindowControlsOverlayGeometryChangeEvent.titlebarAreaRect
   - api.WindowControlsOverlayGeometryChangeEvent.visible
+  - css.at-rules.media.display-mode.window-controls-overlay
   - css.types.env.titlebar-area-height
   - css.types.env.titlebar-area-width
   - css.types.env.titlebar-area-x
diff --git a/features/window-controls-overlay.yml.dist b/features/window-controls-overlay.yml.dist
index 3a9482620b1..648878b11b9 100644
--- a/features/window-controls-overlay.yml.dist
+++ b/features/window-controls-overlay.yml.dist
@@ -38,3 +38,4 @@ compat_features:
   - api.WindowControlsOverlayGeometryChangeEvent.WindowControlsOverlayGeometryChangeEvent
   - api.WindowControlsOverlayGeometryChangeEvent.titlebarAreaRect
   - api.WindowControlsOverlayGeometryChangeEvent.visible
+  - css.at-rules.media.display-mode.window-controls-overlay