ID 496657 - Images have incorrect Drag and Drop MIME data types

Problem summary
Images have incorrect Drag and Drop MIME data types

Customer reported version
Mari 4.8v1

Customer reported platform
Windows 10

Steps to reproduce

1) Launch Mari

2) Run the attached loadImageToShelf.py script in the Python console (replace the image path and Shelf name with appropriate strings)

3) Run the attached mimeTypeInspector.py in the Python console

4) Drag the imported Shelf Image over the dialog field

Expected behaviour
The returned MIME types should be:
[u'Mari/MriImagePath', u'Mari/MriShelfItem'] 

Actual behaviour
The returned MIME types are:
[u'Mari/MriImage', u'Mari/MriShelfItem']

Workaround
Unknown.

Reproduced by support
This bug has been reproduced in:
Mari 5.0v1 - Windows 10
Mari 4.8v1 - Windows 10 - CentOS 7.9 - regression

Unable to reproduce bug in:
Mari 4.7v5 - Windows 10 - CentOS 7.9

Earliest version tested
Mari 4.7v5 - This issue doesn't appear in this version and has regressed