Any views argument after a missing one is silently ignored (D8)

How to reproduce:
* Create a view with 2 arguments
* Pass arguments [NULL, foo]

Expected: Arg2 filters the view

Experienced: View is not filtered, Arg2 and following are silently ignored

Setting major as this breaks a feature with no workaround.

\Drupal\views\ViewExecutable::_buildArguments // see comments

  /**
   * Builds all the arguments.
   *
   * @return bool
   *   TRUE if the arguments were built successfully, FALSE otherwise.
   */
  protected function _buildArguments() {
    // Initially, we want to build sorts and fields. This can change, though,
    // if we get a summary view.
    if (empty($this->argument)) {
      return TRUE;
    }

    // build arguments.
    $position = -1;
    $substitutions = array();
    $status = TRUE;

    // Get the title.
    $title = $this->display_handler->getOption('title');

    // Iterate through each argument and process.
    foreach ($this->argument as $id => $arg) {
      $position++;
      $argument = $this->argument[$id];

      if ($argument->broken()) {
        continue; // =================== Good, following args not ignored
      }

      $argument->setRelationship();

      $arg = isset($this->args[$position]) ? $this->args[$position] : NULL;
      $argument->position = $position;

      if (isset($arg) || $argument->hasDefaultArgument()) {
        if (!isset($arg)) {
          $arg = $argument->getDefaultArgument();
          // make sure default args get put back.
          if (isset($arg)) {
            $this->args[$position] = $arg;
          }
          // remember that this argument was computed, not passed on the URL.
          $argument->is_default = TRUE;
        }

        // Set the argument, which will also validate that the argument can be set.
        if (!$argument->setArgument($arg)) {
          $status = $argument->validateFail($arg);
          break; // =================== Bad, following args ARE ignored
        }

        if ($argument->isException()) {
          $arg_title = $argument->exceptionTitle();
        }
        else {
          $arg_title = $argument->getTitle();
          $argument->query($this->display_handler->useGroupBy());
        }

        // Add this argument's substitution
        $substitutions["{{ arguments.$id }}"] = $arg_title;
        $substitutions["{{ raw_arguments.$id }}"] = strip_tags(Html::decodeEntities($arg));

        // Test to see if we should use this argument's title
        if (!empty($argument->options['title_enable']) && !empty($argument->options['title'])) {
          $title = $argument->options['title'];
        }
      }
      else {
        // determine default condition and handle.
        $status = $argument->defaultAction();
        break; // =================== Bad, following args ARE ignored
      }

      // Be safe with references and loops:
      unset($argument);
    }

    // set the title in the build info.
    if (!empty($title)) {
      $this->build_info['title'] = $title;
    }

    // Store the arguments for later use.
    $this->build_info['substitutions'] = $substitutions;

    return $status;
  }