[Qgis-user] Adding topological vertices

[Jan Hartmann]

Hi all,

In QGIS 2 I could add a vertex on a segment shared by two polygons just 
by double-clicking on that segment. When topological editing was 
enabled, a new vertex was added to both polygons, and I could move them 
both just by dragging.

In QGIS 3, when topological editing is enabled, moving a shared vertex 
is a bit more complex. I cannot just click on that vertex and then click 
on the destination location, for then only one of the shared vertices is 
moved. I have to shift-drag around the vertex, then click on the 
selected vertices, and only then all shared vertices are moved. No 
problem with that, by the way.

The real problem is when I want to add a vertex on a shared segment. 
When I double-click on that segment, a new vertex appears, but only on 
one of the segments. I can move that vertex, but only one segment is 
moved. The underlying segments remain in place. To move them too, I have 
to create vertices on all of them, and move them all to the new 
location. This *is* a problem.

Is there a solution for this? Do I overlook something?

Regards,

Jan Hartmann
Amsterdam