Unable to refine collar and use ward

Attempting to refine supportive regal collar 1. have all the materials and wards needed, but the ward button is not just dimmed (disabled) but virtually invisible. Same for the selected ward icon. There is a 50% chance of success, so obviously i don't want to lose 5 mop4, a chunk of dust, etc. The refine button is enabled but I dare not press it.

I moved this collar to another toon that has none of the materials - mops, dust, etc. Same situation. The refine button is still enabled and I am tempted to try this just to see if the upgrade works. Perhaps the "50% chance" information is just wrong?

I have another collar - sturdy crescent collar 3 - where I am missing some of the materials but I don't have this issue. The ward button and icon are both visible and accessible by mouse. In this case, the refine button is disabled as I would expect.

But I think the GUI logic for refining collars is generally inconsistent. When upgrading a base collar (before mod 20 - unified crescent collar base) to level 1, there is a 100% chance of success but the ward-related GUI elements are also virtually invisible. In this case, doesn't really matter since the upgrade is guaranteed. But logically I don't see or understand why the ward button and icon are (more than just) disabled for this level or any other. And in the case where materials are missing, the refine button should NOT be enabled. If the "require ward" setting is on, then the refine button should also be disabled until a ward is chosen.