A bug which is present for a long time!

[01Kuzma]

This bug lives in a helix for a long time!
Version 3.0.3, but it seems, that it doesn't matter.
plugins/system/helix3/core/helix3.php

	public static function bodyClass($class = '')
	{
		$app       = Factory::getApplication();
		$doc       = Factory::getDocument();
		$language  = $doc->language;
		$direction = $doc->direction;
		$option    = str_replace('_', '-', $app->input->getCmd('option', ''));
		$view      = $app->input->getCmd('view', '');
		$layout    = $app->input->getCmd('layout', '');
		$task      = $app->input->getCmd('task', '');
		$itemid    = $app->input->getCmd('Itemid', '');
		$menu      = $app->getMenu()->getActive();
		if ($menu) {
			$pageclass = $menu->getParams()->get('pageclass_sfx');
		}

		if ($view == 'modules')
		{
			$layout = 'edit';
		}

		return 'site ' . $option
		. ' view-' . $view
		. ($layout ? ' layout-' . $layout : ' no-layout')
		. ($task ? ' task-' . $task : ' no-task')
		. ($itemid ? ' itemid-' . $itemid : '')
		. ($language ? ' ' . $language : '');
	}

This piece of code $option = str_replace('_', '-', $app->input->getCmd('option', '')); breaks a layout of any component which displays its class in the body. It changes a third-party component's underscore symbol (if it's used) to dash!
For what??? Developers are open to use such a naming convention in their own components.
Then the CSS styles or JS dependent plugins don't work.

For instance, Phoca Gallery uses a com_phocagallery class name in the body, it's changed to com-phocagallery!!

FIX it ASAP