bug in 5.4rc2 X11 terminal

[Pieter-Tjerk de B. <p.t...@ut...>]

Hello,

Something goes wrong with fonts or character encodings on the x11 terminal.
See the attached which is the result of simply  
  plot 1e6
The vertical labels have a few unintended characters instead of multiplication
signs (crosses).

Debian's stock gnuplot 5.2pl6 version displays the multiplication sign
correctly on the x11 terminal, as does 5.4rc2 with the Qt terminal.

Any idea what this could be? Any test I could do to help debug it?

Regards,
  Pieter-Tjerk