From dc169057d14f3fd168a9eaea6849f75f8188e6fe Mon Sep 17 00:00:00 2001
From: Hamish Willee <hamishwillee@gmail.com>
Date: Fri, 20 Dec 2024 14:00:06 +1100
Subject: [PATCH 1/2] FF135 ExprFeat - Priorty shced API disabled in preview

---
 .../firefox/experimental_features/index.md    | 42 +++++++++++++++++--
 1 file changed, 39 insertions(+), 3 deletions(-)

diff --git a/files/en-us/mozilla/firefox/experimental_features/index.md b/files/en-us/mozilla/firefox/experimental_features/index.md
index 3ddeeb647d75efe..0b6fe8fda26e17f 100644
--- a/files/en-us/mozilla/firefox/experimental_features/index.md
+++ b/files/en-us/mozilla/firefox/experimental_features/index.md
@@ -1743,10 +1743,46 @@ See [Firefox bug 1697647](https://bugzil.la/1697647) for more details.
 
 ### Prioritized Task Scheduling API
 
-The [Prioritized Task Scheduling API](/en-US/docs/Web/API/Prioritized_Task_Scheduling_API) provides a standardized way to prioritize all tasks belonging to an application, whether they defined in a website developer's code, or in third party libraries and frameworks.
+The [Prioritized Task Scheduling API](/en-US/docs/Web/API/Prioritized_Task_Scheduling_API) provides a standardized way to prioritize all tasks belonging to an application, whether they defined in a website developer's code, or in third party libraries and frameworks. ([Firefox bug 1734997](https://bugzil.la/1734997))
 
-This is enabled on Firefox Nightly (only) from Firefox 101.
-No preference is provided to allow it to be enabled in other releases.
+This feature was enabled on Firefox Nightly in Firefox 101.
+Support in Firefox Nightly 135 has been temporarily disabled in order to avoid [breakage in-the-wild](https://bugzil.la/1937232).
+
+<table>
+  <thead>
+    <tr>
+      <th>Release channel</th>
+      <th>Version changed</th>
+      <th>Enabled by default?</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th>Nightly</th>
+      <td>101</td>
+      <td>No</td>
+    </tr>
+    <tr>
+      <th>Developer Edition</th>
+      <td>101</td>
+      <td>No</td>
+    </tr>
+    <tr>
+      <th>Beta</th>
+      <td>101</td>
+      <td>No</td>
+    </tr>
+    <tr>
+      <th>Release</th>
+      <td>101</td>
+      <td>No</td>
+    </tr>
+    <tr>
+      <th>Preference name</th>
+      <td colspan="2"><code>dom.enable_web_task_scheduling</code></td>
+    </tr>
+  </tbody>
+</table>
 
 ### Notifications API
 

From b0f18c773908318bf824562e914c0513c0e2dcfd Mon Sep 17 00:00:00 2001
From: Hamish Willee <hamishwillee@gmail.com>
Date: Fri, 20 Dec 2024 14:17:02 +1100
Subject: [PATCH 2/2] FF135 Relnote - Add info about disabling

---
 files/en-us/mozilla/firefox/releases/135/index.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/files/en-us/mozilla/firefox/releases/135/index.md b/files/en-us/mozilla/firefox/releases/135/index.md
index 1e2c908f185a350..7072fc11aeff79a 100644
--- a/files/en-us/mozilla/firefox/releases/135/index.md
+++ b/files/en-us/mozilla/firefox/releases/135/index.md
@@ -66,6 +66,11 @@ This article provides information about the changes in Firefox 135 that affect d
 
 These features are newly shipped in Firefox 135 but are disabled by default. To experiment with them, search for the appropriate preference on the `about:config` page and set it to `true`. You can find more such features on the [Experimental features](/en-US/docs/Mozilla/Firefox/Experimental_features) page.
 
+- **Prioritized Task Scheduling API**: <code>dom.enable_web_task_scheduling</code>.
+  The [Prioritized Task Scheduling API](/en-US/docs/Web/API/Prioritized_Task_Scheduling_API) provides a standardized way to prioritize all tasks belonging to an application, whether they defined in a website developer's code, or in third party libraries and frameworks.
+  This has temporarily been disabled in Nightly builds in order to avoid [breakage in-the-wild](https://bugzil.la/1937232).
+  ([Firefox bug 1938242](https://bugzil.la/1938242)).
+
 ## Older versions
 
 {{Firefox_for_developers}}