"Desktop" + bookmarks not in left panel in save dialog

[scott092707]

Although my Desktop and bookmarks are available in the left panel in the Browse for Default Save Directory dialog, they are missing from the Save As... dialog after taking a screen-shot.
Therefore, if I decide to store the image in a different location, there is a lot of clicking involved,
as I have a separate partition for my personal data: "Computer" - "data" - "scott" - "Documents" if I want to store it in my Documents folder..., whereas if I wanted to make "Documents" the default location, I would only need one click from the Default Save Directory dialog.

[By the way, the "Desktop" left panel button (from the Default Save Directory dialog) yields just the same garbled result as many other applications's open/load/save dialogs (so obviously not your fault!) - where are you getting the location from, please, so I can either fix it myself, or file a bug for whatever package is garbling it...!]

scott@scott-ASUS-M2N68-AM-PLUS:$ uname -a
Linux scott-ASUS-M2N68-AM-PLUS 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
scott@scott-ASUS-M2N68-AM-PLUS:$ lsb_release -dsc
Ubuntu 18.04 LTS
bionic
scott@scott-ASUS-M2N68-AM-PLUS:$ echo $DESKTOP_SESSION
QLubuntu
scott@scott-ASUS-M2N68-AM-PLUS:$ apt-cache policy screengrab
screengrab:
Installed: 1.97-2
Candidate: 1.97-2
Version table:
*** 1.97-2 500
500 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
100 /var/lib/dpkg/status

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[scott092707]

[Here is the garbled Desktop location, which I ScreenGrabbed from PCManFM.]

[scott092707]

[Note: re-filed in lxqt/screengrab's page:
https://github.com/lxqt/screengrab/issues/80]