Let's say I have to extrude all faces of this planar construction containing two edges not included in faces, and one isolated vertex:
In this object, there are not hidden vertices, edges or faces:
If I select all faces in Face-Select mode, the result (after extrusion of the selection) is this one:
The orphan edges have been selected, which isn't what I expected since it is not possible to select the edges manually (e.g. by using Border-Select) in this mode. Looks like a bug to me.
But if I select all edges in Edge-Select mode, then switch to Face-Select mode, the result is this one:
The edges are not kept selected. This behavior seems compliant to the documentation about Select modes:
When switching modes in an “ascendant” way [...] the selected parts will still be selected if they form a complete element in the new mode.
Another strange result: Select All in Vertex-Select mode, switch to Face-Select and back to Vertex-Select:
Only one edge is kept selected as well as the isolated vertex. Seems completely buggy.
Anybody with a clear view of this? What is the correct way to select all complete faces for the extrusion?