Let Int¹ WS(M) be the C¹-interior of the set of diffeomorphisms of a smooth closed manifold M having the weak shadowing property. The second author has shown that if dim M = 2 and all of the sources and sinks of a diffeomorphism f ∈ Int¹WS(M) are trivial, then f is structurally stable. In this paper, we show that there exist diffeomorphisms f ∈ Int¹WS(M), dim M = 2, such that (i) f belongs to the C ¹-interior of diffeomorphisms for which the C⁰- transversality condition is not satisfied, (ii) f has a saddle connection. These results are based on the following theorem: if the phase diagram of an Ω-stable diffeomorphism f of a manifold M of arbitrary dimension does not contain chains of length m > 3, then f has the weak shadowing property.