Is it the normal behavior of the editor?

[britzl]

@Onur

Also i see a asterisk when edit a code or component etc. But when i click close button without save manually, it closes asking anything then i open back same file and asterisk still there.Is it means my changes not applied or what? only gone when i do ctrl + s.

We keep all files in memory, even after you close them. If a file has a change the asterisk is shown until the file is saved.