Function command not working

Hello. Ive found another REALLY anoying bug when it comes to function.

When I do "/function name" the function works fine and all and everything that should happen is happening as iit should. Now "execute @s ~ ~ ~ function name" basicly does the same as if you didnt type the execute part... Right? WRONG! When I use this command only an amount of the first few lines execute or only random execute. When it comes to the point where you want to execute something as an entity you r stuck. Cuz the entity wont execute the whole file. And in my eyes this is such a bad bug that REALLY needs to be fixed. In my case Ive done an command which transfers the cordinates of the entity executing the function into an scoreboard. Ive also made a video to show whats the case. When I do function cords it updates all cords of me. But if I do execute @s ~ ~ ~ function cords it only updates the x cords and set y and z to 0. On the right I have setup an scoreboard which shows the value. 

Ps: Couldnt upload the video its too big for Jira.

Hope you have a great day! Bye!