Export doesn't work on Ubuntu

[MaximBar]

Installed tusk 0.23.0_amd64 on Linux Mint.
Logged in and it shows my notebook, and selecting a note.
Trying to export a note via the menu: File > Export Note as > Markdown file
and nothing happens.
ALso when I press Ctrl + O or Ctr + Shift + H, nothing seems to happen.

[Kantuck]

I will confirm this on my system too;

NAME="Ubuntu"
VERSION="20.04.2 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.2 LTS"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal

and

System: Host: zeus Kernel: 5.4.0-72-generic x86_64 bits: 64 Desktop: Xfce 4.14.2
Distro: Ubuntu 20.04.2 LTS (Focal Fossa)

Hope this helps.