Android Studio shows wrong file contents

Question

I have an odd problem with Android Studio. Here is how my class file looks like on Android Studio

And here is what it looks like on a text editor.

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Answer 1

Thanks to @Henry for confirming, by several similarly observed whacko problems the past two days, that my problem is indeed caused by a bug in AS. Follow his links to become convinced yourself. I'll let Henry file the bug report.

So there's no fixing my problem in situ without great effort--wait for bug fix.... which could take awhile.

So here's what I did to work around it and get back to work (it took less than 10 minutes):

1. create new project with no activity (Do the rest inside the IDE, not using Windows or DOS.)
2. copy all .java files into the java folder in the IDE (it's ...\app\src\main\java\)
3. copy all res folders into the res folder (...\app\src\main\res\)
4. copy all asset files into main folder (...\app\src\main\assets\)
5. copy androidmanifest.xml into main folder (...\app\src\main)
6. do a global replace of old project name to new project name

I didn't change any of the files in the new project's ...\app\ folder because compilation was normal.

(I'll tell you this: when I saw what I THOUGHT were mangled FILES and looked at the History and saw nothing resembling what should have been there, I got a sick feeling, but I immediately opened Windows Explorer, selected all of the project's java files, and opened them, en masse, with Notepad++. Whew. No problems seen. (I didn't really think AS could actually mangle the files and I doubt it ever could. But it did wake me up at 5am!))