Why does Atom on Mac Os corrupt files?

Question

atom

System mac os
atom text editor 1.6.2
Can you please explain why this SMART notepad hides part of the code I wrote? I open the next day part of the work is gone? and how to prevent it? everything is stored on 1 hard drive with the system. Thanks in advance.

Answer 1

) the next day?
Did you save? Did you do any FS rollbacks?