Well, that's weird. I'm running a older version of Blender but I'll see if I can find something on this. edit : It seems cannot find anything related to your description of such action in Blender. It also isn't mentioned here https://docs.blender.org/manual/en/latest/modeling/meshes/editing/duplicating/extrude.html or in other sources I checked. Only thing I can add to this is make sure you don't leave doubles by cancelling a extrusion process. And most important : Are you using the hotkeys ? If not you're wasting a lot of your time and effort. Press 'E' to extrude and press 'G' to move (G stands for grab). If you want to move along a certain axis press 'E' or 'G' plus letter of axis. Example, pressing 'E' followed by 'Z' will extrude your selection only along the Z axis. 'G' followed by 'Y' moves a selection only by the Y axis. To confirm E G or S (S = scale) press enter, return or left mouse click.