  We consider the three dimensional SU(2) Yang-Mills theory with adjoint static
color sources, studying by lattice simulations how the shape of the flux tube
changes when increasing the distance between them. The disappearance of the
flux tube at string breaking is quite abrupt, but precursors of this phenomenon
are present already when the separation between the sources is smaller than its
critical value, a fact that influences also some details of the static
potential.
