File Picker - Cannot select file in designated SharePoint folder

[kpoimenidis]

Describe the bug
In the File Picker, providing a path in typesAndSources.locations.sharePoint.folder disables file selection.

To Reproduce
Steps to reproduce the behavior:
Use the following File Picker configuration for entry, selection and typesAndSources.

{
  sdk: "8.0",
  entry: {
    sharePoint: {
      byPath: {
        web: "/sites/<site_name>",
        list: "/sites/<site_name>/Shared Documents",
        folder: "/sites/<site_name>/Shared Documents/<folder_name>",
        fallbackToRoot: true,
      },
    },
  },
  selection: {
    mode: "single",
    maximumCount: 1,
    enablePersistence: false,
  },
  typesAndSources: {
    mode: "all",
    locations: {
      sharePoint: {
        byPath: {
          web: "/sites/<site_name>",
          list: "/sites/<site_name>/Shared Documents",
          folder: "/sites/<site_name>/Shared Documents/<folder_name>",
        },
      },
    },
  },
}

Expected behavior
I would expect:

• the file picker to open at the designated location (it works)
• the user cannot navigate higher, e.g. to Shared Documents (it works)
• both files and folders can be selected in that location and deeper nested locations (it doesn't work, only folders can be selected despite mode="all"

Screenshots

Details
Please provide details around your solution, what you are trying to achieve with our shared controls, and where you believe the bug exists. The more details you can share the easier it is for us to investigate the issue. Thanks!
What I am trying to achieve is to allow a user to select a file from a Teams channel, which translates to /sites/Shared Documents/General for the sharepoint path.

Providing the sharePoint.byPath configuration from above, the file picker opens at the correct location and the user is restricted to that folder and deeper, but the files are all disabled.

Additional context
The full configuration.

{
  sdk: "8.0",
  entry: {
    sharePoint: {
      byPath: {
        web: "/sites/<site_name>",
        list: "/sites/<site_name>/Shared Documents",
        folder: "/sites/<site_name>/Shared Documents/<folder_name>",
        fallbackToRoot: true,
      },
    },
  },
  selection: {
    mode: "single",
    maximumCount: 1,
    enablePersistence: false,
  },
  typesAndSources: {
    mode: "all",
    locations: {
      sharePoint: {
        byPath: {
          web: "/sites/<site_name>",
          list: "/sites/<site_name>/Shared Documents",
          folder: "/sites/<site_name>/Shared Documents/<folder_name>",
        },
      },
    },
  },
  leftNav: {
    enabled: false,
  },
  messaging: {
    origin: location.origin,
    channelId: CHANNEL_ID,
  },
  list: {
    layout: {
      type: "compact-details",
    },
    scrolling: {
      enableStickyHeaders: true,
    },
  },
  commands: {
    upload: {
      enabled: false,
    },
    browseThisDevice: {
      enabled: false,
    },
    fromALink: {
      enabled: false,
    },
    switchAccount: {
      mode: "none",
    },
    manageAccounts: {
      mode: "none",
    },
    createFolder: {
      enabled: false,
    },
  },
}