Possible bugs in Kirby v5.1?

The CMS Questions
1

I updated an existing project from Kirby v5 to Kirby v5.1. I noticed one things that apparently (maybe only for me) no longer work the way they did in previous versions.

File sections with “min: 1” are no longer marked as required fields in the panel view, i.e., the asterisk is missing.

Example:

sections:
  section--highlight-image:
     label: Highlight Image *
     type: files
     sortable: false
     template: image-highlight
     layout: cards
     max: 1
     min: 1 
     image:
        cover: true
        ratio: 3/2

Is this a bug, or is the behavior in v5.1 intentional?

Thanks,
Robert