Using PE Easyrun (which is still rev 11.0) I create blocks of 6 simple contiguous cubes, save them, then insert them without changing view axis or anything else and they seem to work fine. Once I place them in the drawing and change view (front, top, side, iso, etc.) the individual entities in the block change location and alignment in the drawing - and they are corrupted in the block library. If I insert the block again, it is now messed up like the one in the drawing, some entities moved a far distance away from the others.

If you're running a CMS IntelliCAD PE EASY RUN license then you can update to current version.
Review the update instructions related to PE EASY RUN software at viewtopic.php?p=4567