Delete Edge [UI Change?]

[gsharp]

Hmm… I think I have too much free covid time …

Just optimising a dynamic component and just noticed this UI behaviour for the first time…

when I select and delete an edge of a surface the adjoining edge is deleted also… Is this a subtle interface change in the UI… I swear I haven’t been drinking … but I was not expecting an unselected edge to be deleted… ?

A similar strange behaviour…

When I want to join two vertices with an edge (to simplify this curved surface) the drawn edge is invisible (although it affects the screen display) but if I delete the two edges comprising the curve and redraw the single edge connection the edge is visible… ???

Never encountered these UI behaviours before…

Any explanation appreciated

PS I am dealing with fractions of mm dimensions [a bolt thread] a dynamic metric bolt…

[mihai.s]

In SketchUp 8 it’s the same, as in the other versions too.

[ene_su]

I suspect the edge that disappears is smooth/soften.

[gsharp]

Thanks… I guess my usual workflow rarely encounters that UI behaviour

[TIG]

Any smoothed edge that no longer support any faces is auto-deleted when you delete its face[s].
However, any normal or hidden edges are kept…
Smoothed edges on the perimeter of just one face and displayed as ‘solid’, even though they are not…
If you have View > Hidden Geometry on you’ll see this better…
It’s ‘always’ been like this…

[gsharp]

Thanks TIG… sensei