Expression Maps with Spitfire Chamber Strings /Two keyswitches selected simultaneously

Hello Dorico, I’m a new user of Dorico coming from Finale like many others!
When adding keyswitches in the Expression Maps window of Dorico, some keyswitches get stuck while another keyswitche in selected.
These picture might help understand my issues. Thank you !

Welcome to the forum @boris.petrowski. Would you be able to upload your Expression Map?

Hi Daniel
Thank you for your quick response
What do you mean by uploading my expression map ? You mean in Dorico ?
Regards
Boris

At the bottom of the Edit Expression Map dialog, there is a button to Export Library.

Choose a folder to export to and then attach the file here.

Hello Daniel,
in attachment you will find
Exp map.dorico (1.7 MB)
the expression map lib from my Dorico document
Thank you
Boris

FWIW, This problem has been around since long before Dorico was born…