Showing squares instead of folder name characters while saving in attachment in bluemail

Hello !

On my Ubuntu 23.10 (and 24.04 too), when I want to save an attachment to my folders, it shows meaningless squares instead of showing the folder name characters.

My Bluemail version is 1.140.14 (latest/stable).

I follow theses instructions from here but that doesn’t work:

rm -rf ~/snap/bluemail/common/.cache/fontconfig/
rm -rf ~/.cache/fontconfig
fc-cache -r -v

Any ideas ?