Crash when saving a file after having dragged-dropped the same one

Version 2.03 3c7a69d or current master 755bf05 / Windows7

- Load this file, « Promenade » (EDIT: and first, Save this file): Promenade_Example.mscz   (if yes, after reloading, go directly to step #4 ; if not, follow the steps below from scratch)

1) "My First Score"
2) File -> Save As -> Name the file, eg the default "My First Score -> Save → Close
3) Reload the file
4) File -> Save As
5) From the folder where is located this file: select the file → drag and drop onto the score (so, onto the same one)
We are here:

6) Click on "Save"
7) To the message: "The file exists already - Confirm Save", click on "Yes"

Result: crash

Notes:

- After some tests, I note it is not uncommon to find that this maneuver causes the deletion of all data: "0 bytes", with a « Load error » message ». But I cannot reproduce every time currently.
- I am aware that the step #5 is an inappropriate maneuver: caused by awkwardness and haste to wanting rectify “Save” a file made by of one of my (very) young pupils yesterday!:)