Corrupt application windows

Seeing some strange behaviour from multiple applications. Interacting with them gradually results in the window becoming corrupted.

At first it was just JDownloader, but now Thunderbird is doing it too (after a 3->5 upgrade). What is interesting is that any child window or dialog inherits the corruption, even on a different LCD screen (I have 2).

I thought it might be a video card issue at first, but only these 2 applications are affected.

Another interesting piece - if I run the 64bit JDownloader binary, it does not get corrupted, but the 32bit one does.

Compatibility mode doesn't seem to make a difference in either application.

This sound familiar to anyone? I'm at my wits' end. See attached screenshot for an example.

If only people would run native programs, I personally hate the Java runtime, its really slow and buggy for applications, even though in theory it is great (works on MANY OS', Windows, Mac OS X, Linux, Solaris, Android, Symbian ect.).

Here's Thunderbird doing the same thing. Unless it is shipping with an embedded jre/jdk, this isn't specifically a java isssue.

Just run a MalwareBytes scan. MalwareBytes is a very powerful AV on-demand tool compared to other AV's.