I migrated a workspace to 18.1 but now setting a gridline in the report control doesn't work anymore.
Also changing the columnstyle doesn't do anything anymore.

Set ComVerticalGridStyle     of hoReportPaintManager to ...
Set ComHorizontalGridStyle of hoReportPaintManager to ...
Set ComColumnStyle           of hoReportPaintManager to ..
I tested this in the Sig Demo workspace: it doesn't work there either.
I wonder which other properties don't work as well?

I haven't been able to figure out what's wrong, so if anybody has any idea... :-)