**System Information**
Various system configurations, OS: Windows 7, Windows 8.1
**Blender Version**
Broken: 2.76b, 2.77
**Short description of error**
//Linear Extrapolation// seems does //not working while// Action not yet pushed down onto NLA stack as Strip and stack (pertaining to the same object as action) contains at least one Track with //at least one Strip//.
**Exact steps for others to reproduce the error**
# Open attached .blend file: {F318326}.
# Play animation.
# See, that cube stops its motion along X axis at the frame 15 although according to Graph Editor it is obvious that the cube should continue its motion.
**Additional information**
- If all existing Action Strips (in my example only one) will be deleted Linear Extrapolation in the pending Action //will work as expected//.
- If to Channel will be added at least one Modifier the //bug will disappear//.
- If pending Action will be pushed down onto NLA stack as Strip the //bug will disappear//.
- Bug appears only if //Strips belong to the same object// as pending Action.