Cell dissappears at drawing scale 1:100

MicroStation SS3 v.08.11.09.459 (also SS2)

Windows 7 x64, i7, 8GB RAM,  ATI Radeon HD 4600 series

The attached AScale.zip file contains a dgn with 2 cells in a design model that is
referenced to the sheet model. When I change the Drawing Scale in the sheet model
to Engr 1:100 the cell that was created on the DR_P_Cells level disappears and
the cell on the Default level does not. I am wondering whether others see this
behavior? The zip also contains the cell library with the two cells.

AScale.zip