Material Icon with underscore not loading

[AtharvaPawar]

I dont know why but the icons having underscore in them are not loading!!
This has no underscore

This has underscore

[The_K_Studio (Karan M.)]

Check the word spellings in material icons page or try any other similar icon.

[AtharvaPawar]

spelling is correct and i tried with other icons too

[The_K_Studio (Karan M.)]

There is one more way by using png image of material icon.

[AtharvaPawar]

Im using labels instead of the buttons, its working fine.

[Mohamed_Tamer]

Maybe you can set the type face to Material icons, and set the button text to the material icon name?

[AtharvaPawar]

I’m using labels now, Thank you for your help tho.