Window too small on launch, ignores JupyterWidget.console_width setting

[boberstarosta]

Qtconsole always launches in a tiny window. Shouldn't JupyterWidget.console_width have an effect on window width? I doubt it's a window manager issue, all other Qt apps work just fine. I installed qtconsole with apt install jupyter-qtconsole on freshly installed Lubuntu 20.10.

~/.jupyter/jupyter_qtconsole_config.py:

c.JupyterWidget.syntax_style = 'native'
c.JupyterWidget.console_width = 81
c.JupyterWidget.console_height = 40

System info:

OS: Lubuntu 20.10 x86_64
Kernel: 5.8.0-33-generic

Openbox 3.6.1
LXQt Version | 0.15.0
Qt | 5.14.2

jupyter core     : 4.6.3
qtconsole        : 4.7.6
ipython          : 7.17.0
ipykernel        : 5.3.4
jupyter client   : 6.1.6