With Android 5.1, I used to wipe from the bottom left edge to start a phone call. I mean, when I wanted to reach a human whose phone number I knew.
Now it changed and instead starting the phone call after unlocking I am confronted with something else.
So at the moment I swipe upward, unlock, search the phone icon in the second row from the bottom, try to hit it (often I have too fat fingers) and then I can start to lookup the number.
Really? Is that the way I am supposed to make phone calls now?
With #dic:gravitybox you can make shortcuts on your lockscreen that allow you to start some apps before/without unlocking the phone (you’d need #dic:root and #dic:xposed for that).
Another way would be to install an alternative lockscreen (often they come bundled with custom #launchers) that has this function.