Autocompletion layout problem

[JedS]

version:4.7.7
platform:python2.7.18,Win10,amd64

Hi,
Launching the QtConsole with a different font-family and font-size can messed up the auto-completion width calculation.
I launch the console on Win10, using the following command :
python -m qtconsole --ConsoleWidget.font_family="Arial" --ConsoleWidget.font_size=9
When I display auto-completion, the items are not displayed in the available width of the console and horizontal scrollbar is not adjusted also.
If I resize my console, then the horizontal scrollbar position is computed correctly.
Perhaps the scrollbar need to be adjusted on autocompletion event.