QLoggingWidget: Origin not fully displayed

Hello.
In taurus 5.3.1, I encountered this small bug concerning QLoggingWidget:
Even if I make the "Origin" column bigger, its content remains not fully displayed.
You can see this in following screenshot (at the bottom of the application frame):

By the way, is there a possibility to choose, programmatically, which columns to display?
(In my case, the "Origin" column seems useless as I only use local logs)