Hi Mário Cleber Bidóia,
We have fixed the reported issue “Shape setting gets null in shape selected event after serialize and de-serialize the control” and the fix is included in our weekly NuGet of August 24, 2021.
NuGet Version: 19.2.0.57
We thank you for your support and appreciate your patience in waiting for this release. Please get in touch with us if you would require any further assistance.
Regards,
Eswaran.