Still a noob with IDEA but checked the archive and really did not find an answer - Is it intentional the way IDEA is handling nested comments? That is it seems not to parse properly and keep track of the number of open and closing /* and */ ??? It seems the only way to get things to work is something like:
/*
start
*/
/* inner comment
*/
/*
end
*/
so basically you need to add another level of comments else IDEA uses the first closing */ it finds to terminate the first /* The "fix", however, is annoying when it comes time to uncomment as one then has to hunt and remove that extra */ and /*