The average transverse-momentum fraction ($\langle z \rangle$) for K$^0_{\rm S}$ (top) and $\Lambda$ ($\bar{\Lambda}$) (bottom) in data compared with model calculations. The data are compared to PYTHIA 8 with the Monash tune (red band), the Color Rope tune (green band) and the AMPT model with the string melting (blue band). For both PYTHIA 8 tunes, the hatched bands represent the results excluding K$^0_{\rm S}$ triggers coming from decays of the resonances ${\rm K}^{*}(892)^{0}$, ${\rm K}^{*}(892)^{\pm}$, and $\phi(1020)$, and $\Lambda$ ($\bar{\Lambda}$) triggers coming from decays of $\Sigma^{\pm}$, $\Xi^{-}$, $\Omega^{-}$ and their corresponding antiparticles.