Does the cosmological constant stay hidden?

We elaborate on the proposal of [Phys. Rev. Lett. 123, 131302 (2019). PRLTAO0031-900710.1103/PhysRevLett.123.131302], about the possibility of hiding the cosmological constant in the complicated topology that one expects to exist at the Planck scale. We build a differential equation ruling the time evolution of ⟨K⟩, the spatial average of the expansion scalar. Supposing that the solution ⟨K⟩=0 exists despite the presence of a large cosmological constant Λ, we show that such a solution seems to be unstable.