Placement of markups after segmentation using surface cut

[riep]

After having performed a segmentation with the surface cut algorithm, placement of markups is different: place interaction is not released correctly.

Steps:
-Load a volume
-Segment using 'surface cut'
-Apply segmentation
-Go to markup widget and position a "point"

Actual behavior:
Placement interaction is not released after the positioning of the first point. User can position several control points in a row.

Expected behavior:
As it is the case before using the surface cut algorithm, placement interaction should be release after having positioned the point.

Note: the behavior is the same for other markup nodes

[lassoan]

You can change the placement behavior (one/multiple) using the markups toolbar (or in Markups module):

That said, if the Surface cut effect changes the current placement mode then it may make sense to restore the original state after the effect is done with the point placement.

I probably will not get to work on this in the near future, but if you submit a pull request then I can review it. Thank you!