From 742d1cad39422409313100ea41284974ab6210cc Mon Sep 17 00:00:00 2001
From: mmtr <1233880+mmtr@users.noreply.github.com>
Date: Fri, 8 May 2026 12:54:22 +0200
Subject: [PATCH] RTC: Re-enable RTC by default on WoW sites

The CRDT-document bug that motivated #48199 was fixed upstream in
WordPress/gutenberg#77529 (shipped in Gutenberg 23.0, already deployed
to Atomic sites), so we can drop the IS_ATOMIC early-return that forced
the default to disabled on WoW.

Fixes DOTCOM-17053
---
 .../dotcom-16781-temporarily-disable-rtc-on-atomic-sites    | 4 ----
 .../dotcom-17053-re-enable-rtc-by-default-on-wow-sites      | 4 ++++
 projects/packages/rtc/src/class-rtc.php                     | 6 ------
 3 files changed, 4 insertions(+), 10 deletions(-)
 delete mode 100644 projects/packages/rtc/changelog/dotcom-16781-temporarily-disable-rtc-on-atomic-sites
 create mode 100644 projects/packages/rtc/changelog/dotcom-17053-re-enable-rtc-by-default-on-wow-sites

diff --git a/projects/packages/rtc/changelog/dotcom-16781-temporarily-disable-rtc-on-atomic-sites b/projects/packages/rtc/changelog/dotcom-16781-temporarily-disable-rtc-on-atomic-sites
deleted file mode 100644
index af33a1bd236b..000000000000
--- a/projects/packages/rtc/changelog/dotcom-16781-temporarily-disable-rtc-on-atomic-sites
+++ /dev/null
@@ -1,4 +0,0 @@
-Significance: patch
-Type: changed
-
-RTC: Temporarily disable RTC on Atomic sites
diff --git a/projects/packages/rtc/changelog/dotcom-17053-re-enable-rtc-by-default-on-wow-sites b/projects/packages/rtc/changelog/dotcom-17053-re-enable-rtc-by-default-on-wow-sites
new file mode 100644
index 000000000000..e066f33b2e5d
--- /dev/null
+++ b/projects/packages/rtc/changelog/dotcom-17053-re-enable-rtc-by-default-on-wow-sites
@@ -0,0 +1,4 @@
+Significance: patch
+Type: changed
+
+RTC: Re-enable RTC by default on WoW sites
diff --git a/projects/packages/rtc/src/class-rtc.php b/projects/packages/rtc/src/class-rtc.php
index 5d740810c6a6..ea21342641f6 100644
--- a/projects/packages/rtc/src/class-rtc.php
+++ b/projects/packages/rtc/src/class-rtc.php
@@ -243,12 +243,6 @@ public static function default_rtc_option( $default = '', $option = '' ) {
 		if ( ! self::is_allowed() ) {
 			return '0';
 		}
-
-		// Temporarily disable RTC while an issue with CRDT documents is investigated/fixed.
-		if ( defined( 'IS_ATOMIC' ) && IS_ATOMIC ) {
-			return '0';
-		}
-
 		// RTC allowed and option is not stored yet
 		if ( $option === self::OPTION_NEW ) {
 			// If the old option is set, use that.