Bundled extensions are registered twice

Problem/Motivation

Auf der Website ist ein unvorhergesehener Fehler aufgetreten. Bitte versuchen Sie es später nochmal.

InvalidArgumentException: Cannot add two delimiter processors for char "~" and minimum length 2 in League\CommonMark\Delimiter\Processor\StaggeredDelimiterProcessor->add() (line 72 of /var/www/html/vendor/league/commonmark/src/Delimiter/Processor/StaggeredDelimiterProcessor.php).
League\CommonMark\Delimiter\Processor\DelimiterProcessorCollection->addStaggeredDelimiterProcessorForChar('~', Object, Object) (Line: 33)
League\CommonMark\Delimiter\Processor\DelimiterProcessorCollection->add(Object) (Line: 155)
League\CommonMark\Environment->addDelimiterProcessor(Object) (Line: 21)
League\CommonMark\Extension\Strikethrough\StrikethroughExtension->register(Object) (Line: 270)
League\CommonMark\Environment->initializeExtensions() (Line: 349)
League\CommonMark\Environment->dispatch(Object) (Line: 65)
League\CommonMark\DocParser->parse('# Alles

Alles muss gut gemacht werden.') (Line: 64)
League\CommonMark\Converter->convertToHtml('# Alles

Alles muss gut gemacht werden.') (Line: 85)
Drupal\markdown\Plugin\Markdown\CommonMark\CommonMark->convertToHtml('# Alles

Alles muss gut gemacht werden.', Object) (Line: 187)
Drupal\markdown\Plugin\Markdown\BaseParser->parse('# Alles

Alles muss gut gemacht werden.', Object) (Line: 148)
Drupal\markdown\Plugin\Filter\FilterMarkdown->process('# Alles

Alles muss gut gemacht werden.', 'de') (Line: 118)
Drupal\filter\Element\ProcessedText::preRenderText(Array)
call_user_func_array(Array, Array) (Line: 100)
Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. Support for this callback implementation is deprecated in 8.8.0 and will be removed in Drupal 9.0.0. See https://www.drupal.org/node/2966725', 'silenced_deprecation', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 781)
Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 372)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 200)
Drupal\Core\Render\Renderer->render(Array) (Line: 501)
Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 166)
__TwigTemplate_e0259a3e21f94f3cc68f2d23e70a687ed464d31b571c22d4883416cea83fbac6->getrender_item(Array, Array, 1) (Line: 85)
__TwigTemplate_e0259a3e21f94f3cc68f2d23e70a687ed464d31b571c22d4883416cea83fbac6->doDisplay(Array, Array) (Line: 453)
Twig\Template->displayWithErrorHandling(Array, Array) (Line: 420)
Twig\Template->display(Array, Array) (Line: 39)
__TwigTemplate_44f5f0905ed6bb1990f4284b00025b1fb6795d9514999682ca6df8a99ac0a573->doDisplay(Array, Array) (Line: 453)
Twig\Template->displayWithErrorHandling(Array, Array) (Line: 420)
Twig\Template->display(Array, Array) (Line: 36)
__TwigTemplate_ee513463b9ef221974970c0c67b74816fdb18dc241672d275a8f46abad3d1724->doDisplay(Array, Array) (Line: 453)
Twig\Template->displayWithErrorHandling(Array, Array) (Line: 420)
Twig\Template->display(Array) (Line: 432)
Twig\Template->render(Array) (Line: 64)
twig_render_template('themes/contrib/bulma/templates/field/field--text-long.html.twig', Array) (Line: 384)
Drupal\Core\Theme\ThemeManager->render('field', Array) (Line: 431)
Drupal\Core\Render\Renderer->doRender(Array) (Line: 444)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 200)
Drupal\Core\Render\Renderer->render(Array) (Line: 501)
Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 96)
__TwigTemplate_22c9390cfeff0aa0419bd072949b173f1939ef4a06ec98e609a8a903a2e0ae9e->doDisplay(Array, Array) (Line: 453)
Twig\Template->displayWithErrorHandling(Array, Array) (Line: 420)
Twig\Template->display(Array) (Line: 432)
Twig\Template->render(Array) (Line: 64)
twig_render_template('themes/contrib/bulma/templates/node/node.html.twig', Array) (Line: 384)
Drupal\Core\Theme\ThemeManager->render('node', Array) (Line: 431)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 200)
Drupal\Core\Render\Renderer->render(Array, ) (Line: 226)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 573)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 227)
Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 117)
Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch('kernel.view', Object) (Line: 156)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 68)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 57)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 52)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 708)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

Steps to reproduce

View a simple text with this setting.

$ cat config-sync/filter.format.cst_markdown.yml
uuid: 29e09b44-c86e-4270-9b63-06129fae867f
langcode: de
status: true
dependencies:
  module:
    - markdown
name: 'Markdown (Consent)'
format: cst_markdown
weight: 0
filters:
  markdown:
    id: markdown
    provider: markdown
    status: true
    weight: -15
    settings:
      parser:
        id: league/commonmark-gfm
        render_strategy:
          type: filter_output
          allowed_html: '<a href hreflang> <abbr> <blockquote cite> <br> <cite> <code> <div> <em> <h1> <h2> <h3> <h4> <h5> <h6> <hr> <img alt height src width> <li> <ol start type=''1 A I''> <p> <pre> <span> <strong> <ul type>'
          plugins:
            - league/commonmark-ext-heading-permalink
            - league/commonmark-ext-strikethrough
            - league/commonmark-ext-table
            - league/commonmark-ext-task-list
            - markdown
        settings:
          allow_unsafe_links: true
          enable_em: true
          enable_strong: true
          html_input: allow
          max_nesting_level: 0
          renderer:
            block_separator: \n
            inner_separator: \n
            soft_break: \n
          unordered_list_markers:
            - '-'
            - '*'
            - +
          use_asterisk: true
          use_underscore: true
        extensions:
          -
            id: league/commonmark-ext-autolink
            enabled: true
            settings: {  }
          -
            id: league/commonmark-ext-heading-permalink
            enabled: true
            settings:
              html_class: heading-permalink
              id_prefix: user-content
              inner_contents: '<svg class="heading-permalink-icon" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg>'
              insert: before
              title: Permalink
          -
            id: league/commonmark-ext-strikethrough
            enabled: true
          -
            id: league/commonmark-ext-table
            enabled: true
          -
            id: league/commonmark-ext-task-list
            enabled: true
          -
            id: league/commonmark-ext-toc
            enabled: true
            settings:
              html_class: table-of-contents
              max_heading_level: 6
              min_heading_level: 1
              normalize: relative
              placeholder: '[TOC]'
              position: placeholder
              style: bullet
    filterFormat: cst_markdown
  filter_html:
    id: filter_html
    provider: filter
    status: false
    weight: -10
    settings:
      allowed_html: '<a href hreflang> <em> <strong> <cite> <blockquote cite> <code> <ul type> <ol start type> <li> <dl> <dt> <dd> <h2 id> <h3 id> <h4 id> <h5 id> <h6 id>'
      filter_html_help: true
      filter_html_nofollow: false

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes