php magento setup:di:compile Permission issue

[sbwcws]

Issue I am having is this

When I run php magento setup:di:compile - It will run fine and everything but I then have to manually chmod 777 /var in order for me to run Magento otherwise site wont run

Not sure if its a bug or what but I am using Ubuntu and Nginx so not sure why its causing this.

Thanks.

[sbwcws]

Some how its,  related to files and folders permission in Magento /var/generation folder. Its children must be assigned 777 permission, but anytime one folder be created in Magento, it always has 770 permission, this is what the problem is not sure what is causing this if I set manually chmod 777 to var/* then everything is fine

[ipragmatech]

I have the same issue but actually, this is not a bug. After compilation, we have to reset permission for di, generation and cache folder.