LibreCad cant hide indivuduals layers

Version: 2.1.3
Compiler: GNU GCC 9.3.0
Compiled on: Mar 23 2020
Qt Version: 5.12.8
Boost Version: 1.71.0
System: Ubuntu 20.04.2 LTS

Ubuntu 20.04 LTS

This version of LibreCad doens’t show the Hide/Show icon on Layers so it is impossibel to
hide individuals layers.
Can some one help to fix this
Thank you

No idea about how to recover the show/hide icons, but clicking with the right button of the mouse on a layer in the layer dialog should show a contextual dialog where you could toggle layer visibility.

About to recover the icons, maybe something in the preferences that clears/resets settings might help but I am not sure
Options -> Application preferences -> Default