Link field with single option breaks pages dropdown on empty state

[purplespider]

Description

When creating a link field and restricting it to only pages, like so:

  link:
    label: Link
    type: link
    options:
      - page

The field looks as expected, however, when you click where it says "Select...", you don't get the dropdown of pages:

You have to click on “Page” and then select “Page” (the only option), from the dropdown, then the pages dropdown appears as expected:

Expected behavior
For the pages dropdown to appear when clicking "Select" without first needing to click "Pages" > "Pages".

To reproduce

1. Create a link field with only the page option
2. Click on "Select..."
3. Dropdown doesn't appear

Your setup

Kirby Version
4.0.3

Your system (please complete the following information)

• Device: Mac
• OS: macOS
• Browser: Chrome
• Version: 120