Fix notification unmount thread cancel bug (#1211)

CHANGELOG.md

@@ -30,13 +30,16 @@ Making a new release? Simply add the new header with the version and date undern
 -->
 
 ## Unreleased
+
 * Fixed a bug caused by having reference properties (such as `ObjectValue.Value`) that point to an Instance not included in syncback. ([#1179])
 * Fixed instance replacement fallback failing when too many instances needed to be replaced. ([#1192])
 * Fixed a bug where MacOS paths weren't being handled correctly. ([#1201])
+* Fixed a bug where the notification timeout thread would fail to cancel on unmount ([#1211])
 
 [#1179]: https://github.com/rojo-rbx/rojo/pull/1179
 [#1192]: https://github.com/rojo-rbx/rojo/pull/1192
 [#1201]: https://github.com/rojo-rbx/rojo/pull/1201
+[#1211]: https://github.com/rojo-rbx/rojo/pull/1211
 
 ## [7.7.0-rc.1] (November 27th, 2025)
 

plugin/src/App/Components/Notifications/FullscreenNotification.lua

@@ -19,9 +19,15 @@ local FullscreenNotification = Roact.Component:extend("FullscreeFullscreenNotifi
 function FullscreenNotification:init()
 	self.transparency, self.setTransparency = Roact.createBinding(0)
 	self.lifetime = self.props.timeout
+	self.dismissed = false
 end
 
 function FullscreenNotification:dismiss()
+	if self.dismissed then
+		return
+	end
+	self.dismissed = true
+
 	if self.props.onClose then
 		self.props.onClose()
 	end
@@ -59,7 +65,7 @@ function FullscreenNotification:didMount()
 end
 
 function FullscreenNotification:willUnmount()
-	if self.timeout and coroutine.status(self.timeout) ~= "dead" then
+	if self.timeout and coroutine.status(self.timeout) == "suspended" then
 		task.cancel(self.timeout)
 	end
 end

plugin/src/App/Components/Notifications/Notification.lua

@@ -25,6 +25,7 @@ function Notification:init()
 	self.binding = bindingUtil.fromMotor(self.motor)
 
 	self.lifetime = self.props.timeout
+	self.dismissed = false
 
 	self.motor:onStep(function(value)
 		if value <= 0 and self.props.onClose then
@@ -34,6 +35,11 @@ function Notification:init()
 end
 
 function Notification:dismiss()
+	if self.dismissed then
+		return
+	end
+	self.dismissed = true
+
 	self.motor:setGoal(Flipper.Spring.new(0, {
 		frequency = 5,
 		dampingRatio = 1,
@@ -75,7 +81,7 @@ function Notification:didMount()
 end
 
 function Notification:willUnmount()
-	if self.timeout and coroutine.status(self.timeout) ~= "dead" then
+	if self.timeout and coroutine.status(self.timeout) == "suspended" then
 		task.cancel(self.timeout)
 	end
 end