The displays for random waveforms use a fixed seed. In the XT Rack the code is
gen = std::default_random_engine();
gen.seed(525600 + 8675309);
distro = std::uniform_real_distribution<float>(-1.f, 1.f);
urng = [this]() -> float { return distro(gen); };
std::default_random_engine is a lib-c dependent default and so responds differently to seeds based on the libc, platform, etc…
this means on a single platform in a single instance the indicative displays will be stable (namely they won’t re-seed and jitter when you change rate or deform or some such) but they are only indicative so won’t necessarily be stable across libc.
The runtime one uses a different seed per voice and so will indeed be random. (and so they won’t be the same, but they wont’ be the same in a properly distributed fashion).