I get question marks when running in hyper.js, but not in iterm2

[AlbinWarmlind]

Running pipes.sh on hyper.js only displays question marks. pipes.sh -t 4 and up is working but not the ones below.

[StefansM]

You're probably either missing a font, or aren't using a UTF-8 locale. Are you able to display Unicode characters from other applications? You can try pasting some characters from here.

Can you also try these steps?