Report it to your reseller as a bug.
For a work-around... Check out Nick Corina's video at
the bottom of
THIS POST>
Follow his directions to revise & save an object. i.e.; Revise the window's
parameter for "Number of ___ Units".
EDIT:
Another workaround:
Open an instance of AC18 and create the window.
Copy and paste it's wall into AC19.
Eyedropper the window and place as needed.
Marc Corney, Architect
Red Canoe Architecture, P. A.
Mac OS 10.15.7 (Catalina) //// Mac OS 14.5 (Sonoma)
Processor: 3.6 GHz 8-Core Intel Core i9 //// Apple M2 Max
Memory: 48 GB 2667 MHz DDR4 //// 32 GB
Graphics: Radeon Pro 580X 8GB //// 12C CPU, 30C GPU
ArchiCAD 25 (5010 USA Full) //// ArchiCAD 27 (4030 USA Full)