We had the problem with Last login information, it showed the local deleted account (workgroup account) instead of domain account.
Before joining domain, the computer has name DESKTOP-AM8NNL3 and default account was A. After that, we joined to Domain and renamed to FECTESTDLP1, then logon using domain\realuser domain account. The problem is, if domain\realuser login within scanning time, then the Last logon show correctly, but if he logout (computer still online), then the scanner show last logon and computer all wrong. It’s never happen in Lansweeper v8, only v9 has the issue. And the issue was found for all computer not only for some specific case. We tried to do fresh install to test, but same issue. Pls check.