Having a problem with adding dimensions

Having a problem with adding dimensions to a project in LibreCAD 2.0.9, Xubuntu 16.04.4. Under Show Toolbar “Dimensions” when trying to select horizontal or vertical, only the linear icon is highlighted and works. I’m unable to select and use horizontal and vertical dimensions. Is it a LibreCAD bug or am I missing something? THANKS  

I cannot reproduce this and don't have a version 2.0.9 at hand to test. I recommend to upgrade to the latest stable version, 2.1.2 for Linux, or even the 2.2 RC, if you can manage that. Or run the windows version, maybe as a portable app, under wine. Works well.