when I kill GlaDOS the crosshair does not disappear

so my runs never ends because:

Timing begins when the crosshair appears and ends when it disappears after Glados' death.

Open up the console ingame and check what the build number in the top right says. Source Unpack is 5135, in some of the earlier versions of the game the crosshair doesn't disappear at the end.

dont pirate the game

i bought the game a few years sgo.
i downloaded the version 5135 and solved the problem.
thanks for helping me