You may also need to change “width-request”. I think these two interact somewhat. And you may also have to make the overall dialog larger to make room for the longer line. Getting these dialogs to behave well and fit nicely is sometimes frustrating, as the various widgets can be resized by other factors, and unless the various ‘expand’ and “fill” values on each widget and the enclosing widgets are set right, Gtk will sometimes ignore the settings.

Oh, it is not necessary to restart Gramps when editing the glade files, only to close/reopen the Gui element that the glade file is defining, in this case the person editor.

That’s cool !

I tried to change both values without any effect but something’s done when using fill=true property:

It’s not perfect, depending person is tagged or not but it works better: