Using Studio 2018.4.3
Steps to recreate:
1.) Created an orchestrator library
2.) Created a new activity, with an argument of myArgument (In/String)
If i save it, it saves fine, when i close out of the activity and relaunch it, the argument appears.
If you click on outside of the workflow panel that appears on stage, the Properties panel displays the System.Activities.ActivityBuilder object, with 2 properties (DisplayName (string) and ImplementationVersion (ofType Version)). DisplayName is fine, it has the filename of the Activity i created. However, the ImplementationVersion is blank. If I update that field with any value (in my case 1.0 (not in quotes), it doesn’t throw any validation errors. When i save the activity, close it out, and reopen it, the argument i put in for the activity (MyArgument), disappears.
Not sure if this is an issue, or if i’m mishandling the ImplementationVersion property. I couldn’t find any material on the ImplementationVersion. If i leave it blank, everything works fine. Thanks!