Merge pull request #1894 from plotly/random-id-errors

error when autogenerated IDs are used with persistence or snapshots

.github/CODEOWNERS

@@ -1,3 +1,3 @@
 # These owners will be the default owners for everything in
 # the repo. Unless a later match takes precedence
-* @alexcjohnson @Marc-Andre-Rivet @rpkyle
+* @alexcjohnson

CHANGELOG.md

@@ -61,6 +61,8 @@ This project adheres to [Semantic Versioning](https://semver.org/).
         return f'You have entered {value}'
     ```
 
+  [#1894](https://github.com/plotly/dash/pull/1894) restricted this feature so auto-generated IDs are not allowed if the app uses `dash_snapshots` (a Dash Enterprise package) or if the component uses `persistence`, as this can create confusing errors. Callback definitions can still reference components in these cases, but those components must have explicit IDs.
+
     ## Dash Core Components
 
     ### Rearranged Keyword Arguments & Flexible Types

components/dash-core-components/package.json

@@ -15,7 +15,7 @@
     "private::format.black": "black dash_core_components_base/ tests/ setup.py",
     "private::format.eslint": "eslint src --fix",
     "private::format.prettier": "prettier --config .prettierrc --write src/**/*.js",
-    "private::lint.black": "if [ \"$PYTHON_VERSION\" != \"py27\" ]; then black --check dash_core_components_base/ tests/ setup.py; fi",
+    "private::lint.black": "black --check dash_core_components_base/ tests/ setup.py",
     "private::lint.eslint": "eslint src",
     "private::lint.flake8": "flake8 --exclude=dash_core_components,node_modules,venv",
     "private::lint.prettier": "prettier --config .prettierrc src/**/*.js --list-different",