Correct way to bind variables to corner radius?

I’d like to bind a variable from my plugin to a corner radius property. I implemented this like so:

] as const;
for (const property of CORNER_RADIUS_PROPERTIES) {

However, when I use this method, the property picker in the UI does not render as having selected the variable. It will show the correct numeric value, but won’t show that any variable is selected. Even when I dive into the individual properties, it won’t show any of the variables as selected.

Is this just a UI bug? Or is this indicative of an error applying the variable?

What I would expect to see:

What I actually see:

I’m not seeing this issue anymore today, despite not making any changes to my code. Very strange, will update here if it resurfaces!