Even though functionality is working, flaws in the UI of the ARC window can negatively affect the pleasantness of using the feature and make the it feel broken. This bug encompasses several flaws addressed from feedback, which are obvious when comparing the ARC list with lists from the inspector:
# *Window margin is not equal* You can see more space to the right than there is to the left of the whole content of the ARC window.
# {*}Fields are too big{*}, The fields should be as big as {_}randomizer icons{_}.
## The fields that have *incorrect* sizes are:
### Volume and volume min max
### Pitch and pitch min max
### Audio clip list element reference
### Audio clip list element volume
### Time and time min max
## The fields that have *correct* sizes are:
### Audio clips list count
### Avoid repeating last
### Loop count and loop count min max
# *Placement of audio clips list count field* The field should be placed slightly more up to leave some space between it and the list elements
# *Missing border* The audio clips list is missing a border, which is inconsistent design. It makes it look broken, since it doesn't contrast well with the background.
# *Drag handle not centered* The drag handles are a few pixels to high.
# *Misaligned text inside clip reference* If you look at the icon to the left, the text is placed a few pixels too high. This might relate to "{*}Fields are too big{*}", as correcting the size for the reference field might fix this problem.
# *Small object picker* The object picker doesn't fit in the content; there is a small margin at the top and bottom. This relates to "{*}Fields are too big{*}", as correcting the size for the reference field will fix this problem.
# *Clip reference field not vertically aligned* When selecting an audio clips list element, you can see the blue highlight above, but no blue highlight below, meaning that it is not centered. Possibly fixed with "{*}Fields are too big{*}".
# *Previously selected item is same as background* This makes it hard to see, providing opportunity for accidental removal of the wrong list element when removing via the minus button. Might be fixed with the "{*}Missing border{*}".
# *Placement of the plus and minus buttons* The plus and minus buttons used to add and remove elements should be placed slightly more down. Might be fixed with the "{*}Missing border{*}".
# *Avoid repeating misalignment* It sort of belongs to the Playback Mode section, so it should either be aligned to the left or right.

See images for visual evidence.