HSChromeLogger! tries to queue all Chrome Logger logging statements and to rebuild them after page redirection which is used by Joomla! to execute tasks. However some information cannot be queued and thus not rebuild after page redirection either.
HSFirePHP! tries to queue all FirePHPCore logging statements and to rebuild them after page redirection which is used by Joomla! to execute tasks. However some information - especially on trace - cannot be queued and thus not rebuild after page redirection either.