help debug black point with cube !

i have SVN 53247 Buildbot
Window 32 Bits
graphic intel G33/G31

when i copy the cube and move it there is a black dot appearing in viewport only not in the render !

see pic here


thanks for any feedback to debug this problem

here is the file sample

bugblackpoint1.blend (562 KB)

please give you OS SVN and Video card

and let us know if you see samething in viewport!

this will then be use by Devs to debug this problem!
when i redo a bug report

Grease Pencil, remove layer in Properties panel or delete D+RMB

ok but is this normal behavior ?
i did not use the grease pencil
and not certain why or how this was set !

and what does it have to do with copying the cube!
and leaving a black dot?

thanks

As if you don’t use the buttons on the toolshelf, all you need is to hold D and mouse click around to draw with the grease pencil, you probably accidentally pressed D in edit mode while clicking somewhere.

The grease pencil strokes are associated with the current active object. If you duplicate an object with grease pencil strokes this new object will also have those grease pencil strokes. If you change the outliner to Datablocks you will be able to see that one of the objects datablocks is the Grease Pencil Data

well i think i was working on some cycles file a few days ago and i set some default parameters for cycles
and for what ever reason greace pencil was also set and save it Ctrl-U
now i corrected that in my default file and gease pencil is out now!

i did not use D key
but did shift D to copy the object
but should this leave behind a black dot !

just tried again to redo it and it does not do it anymore
will try some more this later on to see how to repeat this behavior!

thanks