Impossible to snap to objects I'm trying to snap two objects with closest vertex, but when the vertex of the object I move is very close, it jumps back! I guess the distance is 15 mm. When it jumps back, a small ring is visible at the other objects vertex. I cant find any solution and need help!
You could try the following:

1: In Edit mode select the vertice you want to use as the snap point.

2: Move the 3D cursor to this vertice, (Shft S to open the snap menu, then choose  Cursor to Selected).

3: In Object mode move origin to the 3D cursor, (Shft Ctrl Alt C and choose the Origin to 3D Cursor option).

4: Change the Snap Target from Closest to Active.

In the example gif below, I’m trying to snap the point of the pyramid object to one of the corner vertices of the cube object.