Actually the bug is still there, just inconsistent on its appearance. After first installing of the new version, everything works like a charm. Today I found no Drawings in scene nor out. Don’t really have a clue here so I’m making a new fresh project to try to find a solution. Kind of loss here.
Hopefully you could have a better luck pinpointing the issue.
Unity 2019.3.12, Latest version of Astar (beta) and Aline
Installing Aline, run a test script (drawing a simple circle when selected) and it’s fine
Installing Astar 4.3.24, Aline drawing is still visible, but nothing (not debug lines, not grid lines) is showing, even in demo scenes.
Downgrade Astar to 4.3.21 and everything appears again, but I can’t use Aline unless it’s 4.3.23+.
It seems to me this is likely an Astar’s bug, not Aline’s.