  Two recently developed methods of modelling chiral magnetic soliton
elliptical instability are applied in two novel scenarios, the tilted
ferromagnetic phase of chiral magnets dominated by easy-plane anisotropy and
the general case of the chiral magnet with tilted applied field and arbitrary
uniaxial anisotropy. In the former case, the analytical predictions are found
to exactly match previous numerical results. In the latter case, instability of
isolated chiral skyrmions has not yet been studied, although the predictions
correspond interestingly to previous numerical investigation of the phase
diagram.
