my understanding is that Mati’s code snippet and other options you’ve tried are correct when displaying the exact rotation value. however, the GUI might be misleading (?). here’s a simple example with just a plane in Isaac Sim 2023.1.0 hotfix.1:
so, i’ll let the mods/devs chime in and hopefully clarify the difference you were seeing from the code vs GUI. also, i think when you add Rotate attribute to a prim that already has Orient attribute, or vice versa, they became additive to one another. furthermore, one acts independently from the other in the GUI and you won’t necessarily see correlation/ real time update as you change one or the other. but both should contribute to the prim’s rotational attribute