Yes, that's https://bugs.gnucash.org/show_bug.cgi?id=799092, fixed three weeks
ago by
https://github.com/Gnucash/gnucash/commit/a389e0a32e9c835218341264e49477e0c51fb333.
Use a recent nightly build from https://code.gnucash.org/builds/win32/stable.
Regards,
John Ralls
> On Oct 24, 2023, at
The current version of GnuCash (5.4-1) leaks a process
each time on exit. So, if a user were to open and
close GnuCash multiple times, their system memory
will keep leaking. At the moment, the only way to kill
leaked processes is to open Task Manager,
search "GnuCash", and quit each one of them.