[opensuse-kernel] Is rpmlib(PayloadIsZstd) now the standard?

Hi there, recently we saw that current kernels from Kernel:stable cannot be installed on anything older than Leap 15.2 due to the requirement for "rpmlib(PayloadIsZstd)". Jiri found out that this was wrongly introduced by a bug in pesign-obs-integration - details in boo#1175882 However, the newly built kernel-firmware-20200827-35.1.noarch.rpm from the same repo now requires "rpmlib(PayloadIsZstd) <= 5.4.18-1", too. The version before still just required "rpmlib(PayloadIsXz) <= 5.2-1". Is this change expected, i.e. on purpose? Or is it a fallout from the bug in pesign-obs-integration, too? I'd appreciate if all packages from Kernel:stable can be installed on e.g. Leap 15.1 as it was always the case. Thx, cheers. l8er manfred