Reproduction Steps
(NET 6.0, DNET 3.12.0)
Initialize new instance of RoleConnectionProperties, using the example from DNET docs
Expected Result/Actual Result
New instance successfully created / Throwing System.ArgumentNullException
P.S.
if you pass dictionary to metadata parameter, works fine. Causing by null to Dictionary in ctor
https://media.discordapp.net/attachments/1123726081489391616/1140321286468407357/image.png

