Tentative intersection snap doesn't work properly

PROBLEM

How can I use intersection snap in 3D? After exporting the file from 2D to 3D file seems like tentative intersection snap operation doesn’t work properly.

SOLUTION

Please see attached video.

1. Start Place Line command.
2. Block the line by clicking once with both mouse buttons (at the end of the line to be extended).
3. Set Intersection (I) snap as Active Snap Mode.
4. Hover over the second line - the intersection point should appear.
5. Accept the solution.
6. Draw the line to the second one.