*Steps to reproduce:*
# Open any project and install ProBuilder
# Create a Plane (Tools>Probuilder>Editors>Create Shape>Plane) and select one of its edges
# Go to the top toolbar and try to select Tools>ProBuilder>Geometry>Extrude
# Notice that it is greyed out

*Actual results:* Extrude works with edges and is not greyed out

*Expected results:* Extrude does not work when used from the top toolbar

*Reproducible with versions:* 6.0.1-pre.1, 6.0.5

*Not reproducible with versions:* 5.2.4

*Tested on (OS):* Mac OS

*Notes:*
* Using Extrude from the context menu in the Scene View (RMB on your ProBuilder mesh>Extrude) works correctly.