[ORD 2020 R2] Problem with point control

Hello, I have problem with point control.

I imported alignment from alg file both horizontal and vertical – (all check integrity in Power InRoads SS2 are ok). Horizontal alignment has ca. 1244m

I created corridor and very simple template with ditch and without (end condition to existing terrain) using display rules.

Problems started when I tried to assign point control to null point *** controlled depth of the ditch. Right ditch vertical alignment starts at 0+000 and ends at ca.  0+300, but there is a gap between 0+079 and 0+113 (there is no point control square on dynamic xs window and of course there is no ditch). Point control of this point is on entire horizontal alignment (0+000 to ~1+244).

My first thought was that problem is in imported alg file, but when I recreated horizontal and vertical alignment (without import) problem still exists in the same place.

But there is one strange thing. When I extended right ditch vertical line to 1+054 the ditch appeared from 0+101 to 0+102. Gap entirely gone when I extended line to 1+233.

Did anyone encounter similar problem?

I have sample files, but I do not know where upload them to.

Regards,

Piotr Stacewicz