Some symbols not shown on an HP Prime correctly

[Arno K]

I cannot help you with that problem, I don't have it, neither on the pc-emulator, nor on my phone,or my HW2-Prime.
This seems to be a problem of settings.
What bothers me more is the fact that the phone and the HW2 provide the same solution which is different from the emulators (it correctly displays the ...), these are not the solutions your picture gives.
HW2: [-1.927... 0 7.6286E-3]
Emu: [−0.991307204277,−0.850784841819,0,0.150462101267,0.583133806685]
Arno