Blueprint File resort error

I'm sorry, it's me again. :)

[Latest Admin Version: Grav v1.6.0-beta.7 - Admin v1.9.0-beta.7]

There are two demo sites

I add one file field (Blueprint see below) an upload a file to the Typography Page (the second page)

After that I change the sorting:

After saving, the image is no longer displayed.

-> The path is not automatically adjusted when you re-sort

`extends@: default

form:
fields:
tabs:
fields:
content:
fields:
header.image1:
type: file
label: Image
avoid_overwriting: true
destination: '@self'
multiple: false
style: vertical
accept:
- image/jpg
- image/jpeg `