When attempting to install the PAM 3.4.5 or 4.0.1 PAM Client on MacOS Big Sur - the installation window goes away and never installs.
No errors -> but installation Window disappears and installation never completes
Release : 3.4.2 and higher
Component : PRIVILEGED ACCESS MANAGEMENT
MacOS Big Sur Appearance Mode set to "Dark Mode and or Auto Mode"
On MacOS >> System Preferences >> General >>
Here for Appearance -> they were in "Auto" mode, set to "Light Mode" - which resolved the issue.