SIB/SAB is totally disabled in Safe Mode by default.
You can enable it via group policy or registry values:
EnableInSafeMode=(DWORD)1 in HKCU\SOFTWARE\StartIsBack or HKLM\SOFTWARE\StartIsBack
Yes, I confirm there's incompatibility with 7+TT and 3.0.5
If you're affected you can downgrade to 3.0.2 for now
https://startallback.com/download.php?v=3.0.2