Cannot use % or ° in card title or units

[beegee-tokyo]

When I set my title to "Temperature inside (°C)" or "Humidity inside (%)"
or
when I set the units to "°C" or "%"
Crouton cannot connect to the device.
Any way to use this kind of characters in the title or units?

[edfungus]

So just to clarify, it can connect without the % or ° characters?

[beegee-tokyo]

Yes, it can connect if I avoid characters % or °.