Curiously, I'm observing in bash 5.0-6ubuntu1.2 that tidily appending the above to the default ~/.bashrc does not work: The variables appear overwritten as inte

Curiously, I'm observing in bash 5.0-6ubuntu1.2 that tidily appending the above to the default ~/.bashrc does not work: The variables appear overwritten as intended when inspected, but upon shell exit, the first-set values (from first few lines of .bashrc e.g. HISTFILESIZE=2000) control the update to .bash_history. Anyone else see this in the bash distro? Seems to be a regression. The fix of course is to simply delete or hack a '#' into the start of the unwanted lines from the default .bashrc.