is Android Studio corrupting my project files?

Question

I have two very annoying bugs which is ocurring in the project I am working with. Android Studio keeps overwritting code from many classes using another classes inside the same project.

1 - File contents are wrong
2 - The encoding inside some files seems to have strange characters

For you to have an idea, I will upload a few screenshots below:

This one was supposed to be an enumeration class.

This class was duplicated in another class (overwritting)

This class is all messed up and has strange characters...

At first, I thought the files were really corrupted, then I opened them in their respective folders to check whether it was only in Android Studio or not, and they are completely normal there.

ActivitiesMode.java

ReviewDatesRecyclerView (duplicated file)

ReviewEditRecyclerViewAdapter (UTF Strange characters)

Does someone has an idea on what can be happening?

Answer 1

Should delete:

1) C:\Users\cc.AndroidStudio3.2\system\caches

2) all .iml files in your project folder

3) .idea with .gradle folders.