The "Profile" dropdown lists "High Detail - 0.15mm", "Standard - 0.25mm" and "High Speed - 0.35mm" as options.
If you select a different "Profile" for each extruder; for example, one with "High Detail - 0.15mm" and then one with "Standard - 0.25mm", when the dropdown closes it shows what I assume is it splitting the difference. So in this example, when the dropdown closes, it shows "Standard - 0.200mm" for the one extruder and "High Detail - 0.200mm" for the second extruder.
While I think I understand the goal, from a UX point of view this is confusing because you see the same "mm" for both even though they have different descriptions and when you select the dropdown and it opens it still shows "0.25mm" and "0.15mm".
It does appear to be setting the "Layer Height" per what it shows when the dropdown is closed.
Anyway, this is confusing - maybe only to me?