  The emergence of correlated phenomena arising from the combination of
1$\mathrm{T}$ and 1$\mathrm{H}$ van der Waals layers is the focus of intense
research. Here, we synthesize a novel self-stacked 6$\mathrm{R}$ phase in
NbSeTe, showing a perfect alternating 1T and 1H layers that grow coherently
along the c-direction, as revealed by scanning transmission electron
microscopy. Angle resolved photoemission spectroscopy shows a mixed
contribution of the trigonal and octahedral Nb bands to the Fermi level.
Diffuse scattering reveals temperature-independent short-range charge
fluctuations with propagation vector $\mathrm{q_{CO}}$=(0.25,0), derived from
the condensation of a longitudinal mode in the 1T layer. We observe that ligand
disorder quenches the formation of a charge density wave. Magnetization
measurements suggest the presence of an inhomogeneous, short-range magnetic
order, further supported by the absence of a clear phase transition in the
specific heat. These experimental analyses in combination with \textit{ab
initio} calculations indicate that the ground state of 6$\mathrm{R}$-NbSeTe is
described by a statistical distribution of short-range charge-modulated and
spin-correlated regions driven by ligand disorder. Our results devise a route
to synthesize 1$\mathrm{T}$-1$\mathrm{H}$ self-stacked bulk heterostructures to
study emergent phases of matter.
