I feel silly asking this and even more silly to have this problem. I have a android project that has been executing fine until now.
but a couple of days ago, without
I ran into the same problem these days, but none of the solutions above worked for me(except for factory reset, don't wanna do that for now).
As Kennifer stated, problem is with the device since this happens only on my Zync Z5 phone (I have several other devices with Android on which app start in Run mode, not Debug mode).
The only trick that worked for me was to delete the launch configuration every time wanted to run app after a debug, but it's annoying to do this every time I need a debug.