"Delete descendants" setting doesn't work after restart

[sunvis0r]

I deleted "HKEY_CURRENT_USER\Software\JavaSoft\Prefs" registry key (optionally, make a backup) and ran Protege to reset its settings. Then I added superclass and subclass, deleted the first, unchecked "Always show this confirmation" box and ticked "Delete and asserted descendant classes" in confirmation window. It works, but after restart it doesn't.

After all of these steps I went to registry and found this:

[HKEY_CURRENT_USER\Software\JavaSoft\Prefs\/P/R/O/T/E/G/E_/P/R/E/F/E/R/E/N/C/E/S\application_preferences\delete.preferences]
"delete.descendants"="true"
"delete.confirm.descendants"="false"
"delete.confirm.always"="false"

If I manually edit "delete.confirm.descendants" from "false" to "true", It works until I restart Protege.

Protege 5.5.0 JDK 18 0.0.1 (javac 11.0.16) Windows 10 x64