Insert a column. Now take a wall at least than twice as wide as the column and drag it to the edge of the column -- the wall eats the column!
But wait - there's more...
Now take a curtain wall and end it against the column -- that works fine. But then drag the wall that's 2x the width of the column and everything goes to pot.
I STILL find Revit's wall joins way too reactive. I think others have also wished that there was some sort of toggle you could activate to allow/disallow joins at wall ends. Or a wall join tool: the rest of the time walls would just stop where you dragged them.
Thoughts or workarounds anyone? I tried an in-place void to cut the end off the thick wall to expose the column, but that's a bit brutal...