[GNC] Peculiarities in standard "Investment Portfolio" Report

[rsbrux]

Two items in my portfolio show as having zero value in the standard
Investment Portfolio report, whereas the Advanced Portfolio report
shows the correct values. The copy of portfolio.scm in
/var/lib/flatpak/app/org.gnucash.GnuCash/current/active/files/share/gui
le/site/2.2/gnucash/reports/standard/ agrees bit for bit with the one
in the github repository
https://github.com/Gnucash/gnucash/blob/stable/gnucash/report/reports/standard/portfolio.scm
Selection of accounts in the standard Investment Portfolio report also
appears somewhat unpredictable: Some accounts (even hidden and obsolete
ones) are preselected (even though I am using the standard menu entry
and have deleted all corresponding saved reports).