Can not type number on Azerty-keyboard

Hey,

Just tried AB-streets, pretty cool!

I'm on Kubuntu 19.10 with an Azerty keyboard (Belgian to be precise). These keyboards have numbers under Shift + top row. However, when attempting to type a number, this doesn't work (either I get nothing or the symbol I should get without shift is typed). A bit annoying when phasing traffic lights

The numeric keyboard didn't work either, neither with or without num-lock activated.