White blank screen when no themes enabled [5.2.1-RC1]

When none of In-Portal themes is enabled and marked as primary, then user only sees empty blank screen instead of Front-End. Debugger also appears hidden.

I guess, that a message should be shown to the user, explaining the problem.

During debugging revealed that application interrupts in kApplication::Init method. Further debugging showed that problem is in the kApplication::ApplicationDie method:

	/**
	 * Stops processing of user request and displays given message
	 *
	 * @param string $message
	 * @access public
	 */
	public function ApplicationDie($message = '')
	{
		$message = ob_get_clean() . $message;
		if ( $this->isDebugMode() ) {
			$message .= $this->Debugger->printReport(true);
		}
		echo $this->UseOutputCompression() ? gzencode($message, DBG_COMPRESSION_LEVEL) : $message;
		exit;
	}

Output of this code will be done in buffer and never be showed.

Fixes_white_screen_when_no_theme_is_enabled.patch

Related Tasks

INP-1376 - Getting issue details... STATUS