License Delivery maintenance is expected to occur on Saturday, November 30, between 8 AM and 11 AM CET. This may cause a short 3-hours outage in which license-related tasks: license key upload, download, update, SSA validation, access to the license pool and Graphisoft ID authentication may not function properly. We apologize for any inconvenience.
Installation & update
About program installation and update, hardware, operating systems, setup, etc.

object preview box goes blank after several uses.

Anonymous
Not applicable
object preview box goes blank after several uses. Must srestart program to bring it back
2 REPLIES 2
rjwilden
Booster
DITTO
Richard Wilden Design. Ltd
Dunedin, New Zealand.
Imac 27" i9 3.6GHz; 32GB Ram Mac OS 11.3
Archicad V23:V24
Link
Graphisoft Partner
Graphisoft Partner
It's a bug that's been discussed here.

Cheers,
Link.