Version 4.5.0rc2

CHANGELOG.md

@@ -36,6 +36,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 - [#4075](https://github.com/plotly/dash/pull/4075) `dcc.Location(refresh=True).href`, `html.Area.href` and `html.Base.href` now block `javascript:` URLs like `html.A`.
 - [#4075](https://github.com/plotly/dash/pull/4075) Pages `path_template` matching no longer errors or backtracks badly on paths with a newline.
 - [#4075](https://github.com/plotly/dash/pull/4075) Add `configure_mcp_server(cache_by=..., cache_maxsize=...)` so apps whose layout or callbacks depend on the user can keep the MCP server's cached tool descriptions and initial values per user (128 users by default, `None` for no limit).
+- [#4052](https://github.com/plotly/dash/pull/4052) Fix callbacks of removed components still firing after a callback returns `None` for `children`: the renderer now clears their paths. Fixes [#4033](https://github.com/plotly/dash/issues/4033).
 - [#4027](https://github.com/plotly/dash/pull/4027) Support `async def` hook routes (`dash.hooks.route`) on all backends, stop hook routes from leaking the app context to the caller, and let hook routes and MCP read the request on the `fastapi` backend.
 - [#4053](https://github.com/plotly/dash/pull/4053) Fix callbacks being registered twice under a reloader (e.g. `uvicorn --reload`) when `Dash()` is given an explicit `name` or is built by an app factory called from the main module. Fixes [#3912](https://github.com/plotly/dash/issues/3912).
 - [#3980](https://github.com/plotly/dash/pull/3980) Fix the three `before_request` hooks (`Dash._setup_server` and the pages `router_sync` / `router_async`) publishing their "already done" guard flag before the setup work behind it had run. Under a multi-threaded WSGI worker such as `gunicorn -k gthread` (or under an ASGI worker for the async router), a second request arriving mid-setup could observe the flag already set, skip setup, then read `registered_paths` / `callback_map` / the pages router callback while they were still being registered - causing the first burst of component bundle requests after a restart to 500 with `Error loading dependency. "<lib>" is not a registered library`, or the pages router to hit `DuplicateCallback` when two workers raced past the guard. Each hook body now runs under a lock (`threading.Lock` for the two sync hooks, an `asyncio.Lock` bound to the running loop for the async router) and only publishes the flag after all work completes. Fixes [#3971](https://github.com/plotly/dash/issues/3971).

components/dash-core-components/package.json

@@ -1,6 +1,6 @@
 {
   "name": "dash-core-components",
-  "version": "4.5.1",
+  "version": "4.5.2",
   "description": "Core component suite for Dash",
   "repository": {
     "type": "git",

components/dash-html-components/package.json

@@ -1,6 +1,6 @@
 {
   "name": "dash-html-components",
-  "version": "4.5.1",
+  "version": "4.5.2",
   "description": "Vanilla HTML components for Dash",
   "main": "lib/index.js",
   "repository": {

components/dash-table/package.json

@@ -1,6 +1,6 @@
 {
   "name": "dash-table",
-  "version": "7.5.1",
+  "version": "7.5.2",
   "description": "Dash table",
   "repository": {
     "type": "git",

dash/_dash_renderer.py

@@ -1,7 +1,7 @@
 import os
 from typing import Any, List, Dict
 
-__version__ = "3.5.1"
+__version__ = "3.5.2"
 
 _available_react_versions = {"18.3.1", "18.2.0", "19.2.4"}
 _available_reactdom_versions = {"18.3.1", "18.2.0", "19.2.4"}
@@ -85,7 +85,7 @@ def _set_react_version(v_react, v_reactdom=None):
     {
         "relative_package_path": "dash-renderer/build/dash_renderer.min.js",
         "dev_package_path": "dash-renderer/build/dash_renderer.dev.js",
-        "external_url": "https://unpkg.com/dash-renderer@3.5.1"
+        "external_url": "https://unpkg.com/dash-renderer@3.5.2"
         "/build/dash_renderer.min.js",
         "namespace": "dash",
     },

dash/dash-renderer/package.json

@@ -1,6 +1,6 @@
 {
   "name": "dash-renderer",
-  "version": "3.5.1",
+  "version": "3.5.2",
   "description": "render dash components in react",
   "main": "build/dash_renderer.min.js",
   "scripts": {

dash/version.py

@@ -1 +1 @@
-__version__ = "4.5.0rc1"
+__version__ = "4.5.0rc2"