Hi René ;
Yes, I just moved the computed ( ) expression in the DWO source of "x_2b" that was before the column definitions into the latter part of the DWO source where the other computations are declared. The DWO processes the columns first and then the computations in the order they are listed in the DWO source.
So, I suspect that the issue with your original DWO can be solved by editing the source and moving the undesirable computes to the bottom of the DWO source and in the order of their desired computational sequence.
I am confident that the PB IDE will keep your DWO source computes in that order from this point onwards editing wise. However, I am not sure what the next migration to 12.5.x or 15.x will do to that.
However, at least you have a workaround for now!
Good luck!
Regards ... Chris