Android Studio: Files are edited without my intervention

Question

I was watching around for a bug and one solution says to do: "File > Invalidate Caches and Restart"

But then I find my build.gradle replaced with unknown data.

Later I replaced it again with "previous" data. And again did the same "File > Invalidate Caches and Restart"

Now, my activity_main.xml file got replaced with this:

<component name="libraryTable">
  <library name="Gradle: com.android.support.constraint:constraint-layout-solver:1.1.3@jar">
    <CLASSES>
      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/com.android.support.constraint/constraint-layout-solver/1.1.3/bde0667d7414c16ed62d3cfe993cff7f9d732373/constraint-layout-solver-1.1.3.jar!/" />
    </CLASSES>
    <JAVADOC />
    <SOURCES />
  </library>
</component>   

What triggered this? I lost my XML code here.

Answer 1

I have tried below solution and its work for me.

I have delete the caches folder from C: Drive. after an open project in an Android studio.

C:\Users\admin.AndroidStudio3.3\system\caches

Answer 2

Though the files within Android Studio appeared to be modified and filled with some garbage, I was able to open them with other editors and the data is still there.

Windows users, don't do this: "File > Invalidate Caches and Restart"

I have not found a way to restore this in Android Studio. But was able to copy and paste the file data from another editor and make it work.