Icons: Laptop vs Desktop

The icons on my laptop different from those on my desktop. The images show first the laptop then the desktop. The laptop icons are blocky and difficult to read.

Both screens are 1920 pixels wide. The desktop screen is 24", the laptop 14". Under Tools the Toolbar Icon Size is set to Automatic on both machines. How can I get the icons on the laptop to look like those on the desktop?

the difference is scaling factor. It’s tdf#119020, fixed in 6.1.4.

Thanks, good to know that it’s not something stupid that I have done!