Names, locations, labels with diacriticals characters - display issue after restarting


New to openhab2, I’ve just started a fresh configuration on a pine64 using the openhab2/pine64 distribution.

I configured a few zwave fibaro devices on it and they are reported ok.

But I’ve got a display issue when I put diacriticals characters in names, locations or labels (I’ve used only the paper-ui interface to define the things and items). Everything displayed ok until I restarted openhab2 service. After that, all diacriticals chars display as “?”.

Any idae of what I missed ?