lucian0308/openemr — comment on commit 2620af8f661165c691b8521f417289795832aa85
File: interface/main/main_screen.php line 70
By bradymiller:

Note that concurrent_layout can be equal to 0, won't this now erroneously pass this when it's set to 0. Thus shouldn't there be something like this
if ( isset($GLOBALS['concurrent_layout']) && ($GLOBALS['concurrent_layout']) ) {