Fabrice Couvreur schrieb am 13.12.2023 um 19:03:
> Hi,
> Is this a bug or not ?
> The key to coloring the background of the text seems to no longer work.

There is a problem with the corner option, you can either hope it gets 
fixed in the next release
(corner=round still works) or create your own background as metapost 
graphic with rounded corners.

Wolfgang