Android L inserts unwanted intents

My app happily works with Android Kitkat and below. However, I started getting complaints from Android L users that got crashed on their device.

An amazing thing happened while debugging my Lollipop application. Although the debugger was attached to the application (i.e. I launched the application from Eclipse), the application did not work.

However, when I killed the debugger and ran the application in the emulator, it crashed.

I found that Android L is embedding intent.

I was only checking if the extra package was not null. This was not the case, so when I tried to access my intent the application crashed.

I tried to write this extra and received

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My question is, why does this happen on Android Lollipop? This doesn't happen in any other Android version.