Backoffice warnings when using UI Styles Widget

Problem/Motivation

Hello Christian,

I'm currently site building paragraphs with UI Suite and also using UI Patterns Settings + UI Patterns UI with UI Styles Widget.

When leveraging UI Styles Widget to customize component forms I get following warnings in backoffice on node/xxx/edit :

Warning: Undefined array key "title" in Drupal\ui_patterns_settings\Plugin\UiPatterns\Source\UiStylesWidget->addCssRequired() (line 146 of modules/contrib/ui_patterns_settings/src/CSSWidgetTrait.php).
Drupal\ui_patterns_settings\Plugin\UiPatterns\Source\UiStylesWidget->addCssRequired() (Line: 108)
Drupal\ui_patterns_settings\Plugin\UiPatterns\Source\UiStylesWidget->cssSettingsForm() (Line: 75)
Drupal\ui_patterns_settings\Plugin\UiPatterns\Source\UiStylesWidget->settingsForm() (Line: 227)
Drupal\ui_patterns\Element\ComponentFormBase::getSourcePluginForm() (Line: 93)
Drupal\ui_patterns\Element\ComponentPropForm::buildForm() (Line: 1065)
Drupal\Core\Form\FormBuilder->doBuildForm() (Line: 1128)
Drupal\Core\Form\FormBuilder->doBuildForm() (Line: 1128)
Drupal\Core\Form\FormBuilder->doBuildForm() (Line: 1128)
Drupal\Core\Form\FormBuilder->doBuildForm() (Line: 1128)
Drupal\Core\Form\FormBuilder->doBuildForm() (Line: 1128)
Drupal\Core\Form\FormBuilder->doBuildForm() (Line: 1128)
Drupal\Core\Form\FormBuilder->doBuildForm() (Line: 1128)
Drupal\Core\Form\FormBuilder->doBuildForm() (Line: 1128)
Drupal\Core\Form\FormBuilder->doBuildForm() (Line: 1128)
Drupal\Core\Form\FormBuilder->doBuildForm() (Line: 1128)
Drupal\Core\Form\FormBuilder->doBuildForm() (Line: 1128)
Drupal\Core\Form\FormBuilder->doBuildForm() (Line: 597)
Drupal\Core\Form\FormBuilder->processForm() (Line: 347)
Drupal\Core\Form\FormBuilder->buildForm() (Line: 73)
Drupal\Core\Controller\FormController->getContentResult()
call_user_func_array() (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 634)
Drupal\Core\Render\Renderer::Drupal\Core\Render\{closure}()
Fiber->resume() (Line: 649)
Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 121)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext() (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 183)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53)
Drupal\Core\StackMiddleware\Session->handle() (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28)
Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32)
Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 118)
Drupal\page_cache\StackMiddleware\PageCache->pass() (Line: 92)
Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 53)
Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 54)
Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 745)
Drupal\Core\DrupalKernel->handle() (Line: 19)

As administrator, the more I add UI Styles Widget the more warnings I get, that slows down the page a LOT ...