Bug: DevLoft: undo in AddRuling doesn't work

Hello.
It seems -DevLoft in 8.27.26019.16021, 2026-01-19 and 9.0.26027.12305, 2026-01-27 might have a few issues:

  1. the undo in AddRuling doesn’t do anything
  2. u shortcut for Untwist changes to n in AddRuling while u become shortcut for Undo very confusing
  3. in some cases when adding a ruling, the first point of the ruling attaches to the wrong curve:
  4. when addruling starting point clicked at end of curve1 it jumps to end of curve2 and second point unexpectedly only available on curve1 again. Clicking on curve1 will move the edge of the surface to that point (that actually could be useful feature, but currently it reversed)

Thank you.