Crazy bug with "back" tap
For some days now I've been experiencing a weird issue with the back tap of the navigation bar.
At times (like 1 out of 5) when I'm inside an app and I tap back instead of going straight to the home it shows for a split second (but sometimes even longer like 2 or 3 seconds) one of the apps that was previously opened (especially apps that I use a lot like Twitter, Tapatalk or What's App).
The weirdest thing though, is that I'm now currently using my 3rd different rom and my 4th different kernel and I've been experiencing the issue with ALL of them. Purity 4.4 with Franco r16, Purity 4.4.1 with Franco r19, Cyano 11 with Trinity and now Cyano 11 with Franco r20. In all of those combination I've had the issue with the back tap. Sometimes doing a wipe of cache and dalvik helps post-pone it, like it doesn't show up for some hours, but then it always comes back. I don't recall having this issue when I was stock, but then again I remained on stock for a very brief time.
Anyone else been having the same problem? How to solve it?