Hello, im here like everyone else with similar issues. I recently upgraded to Pro 3.2. I was getting identical behavior as everyone else. features disappearing on edit in a versioned edit session from a registered SDE DB.
Following guidance from @George_Thompson , I did confirm our SQL Server is 2016 and I have the latest ODBC client drivers on my workstation. I did discover that the SDE DB version was at 11.1 (from the 3.1 upgrade last summer) and I DID have to apply the upgrades to 11.2 / 3.2 as instructed. But the errors persisted.
Following @MartinWong1 [above]- i checked those settings and sure enough my Pro was configured for "Enable and disable editing from the Edit tab > Multiple workspace edit session". I switched this to Single Workspace Edit Session and restarted Pro. I noted a new Icon for the start editing session, I clicked that, found a new Edit dialog, selected my workspace, and started editing. Now the edits seem to be proceeding as expected, although errors are being thrown in the Notifications, nothing is disappearing as before. I will continue testing.
Of note, in 3.1 and prior, I had my Pro configured to "Enable and Disable Edit from the Edit bar" and I instruct my junior staff in this. I like this feature to avoid accidental edits. Prior to this debugging session and @MartinWong1 [above] , i had not considered to check this in 3.2 and had not adjusted any options. I wonder if there is something weird with this new feature and the way it migrates over a user settings during upgrade? I don't know. But @MartinWong1 work around seems to help avoid the features from disappearing.