[Bug 265074] chromium pkg memory not freed after closing

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=265074

            Bug ID: 265074
           Summary: chromium pkg memory not freed after closing
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: ports-bugs@FreeBSD.org
          Reporter: hrothgar.ofstingan@gmail.com

Using FreeBSD 13.1-RELEASE on amd64
installed chrome via pkg, not port, since the pkg version claims to be more
up-to-date release 

Version 103.0.5060.53 (Official Build) (64-bit)

vs.

100.0.4896.60

(as listed in /usr/ports/www/chromium/Makefile )
(I haven't bothered to test the ports version for obvious reasons)

Strangely, I read about a perhaps related bug today seems to suggest that this
version fixes memory problems like use after free:

https://chromereleases.googleblog.com/2022/06/stable-channel-update-for-desktop_21.html

But, on my old mac mini 4GB ram edition on FreeBSD, I see memory usage at
around 3.5 gigs free after startxing into twm, but after starting chrome and
quitting, that drops down to about 2.8 gigs and doesn't switch below that
number.

So, it doesn't appear to be freeing memory properly when the programme quits.
(Obviously, this is simple to reproduce, reboot a FreeBSD system; startx or
xinit to get a minimal environment, run top (to see memory usage), then compare
after starting chrome and after quitting chrome, and note that the memory usage
doesn't return back to normal).

I'm unsure if any other users/systems are affected.

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