The citations-hover feature is not working for custom citation style languages that uses superscripts

[jeweljohnsonj]

I was trying out some custom citation style languages (csl) that supported numeric superscripts. Particularly the following two styles as given below;

1. American Psychological Association 7th edition (numeric, superscript)
2. Vancouver (superscript)

The citation style worked but the citations-hover feature was not working. Errors are replicable using the above mentioned styles in quarto version 1.0.16.

Instead of superscripts, I then tried out a csl which used bracketed numbers (American Physiological Society). The citations-hover feature worked perfectly fine in this case.

So is this some bug for csl files that support superscripts?