Error changing the keywords of custom icons

[Flucadetena]

After adding a custom icon I can change the name, but when trying to change the keypwrds it doesn't.

The error that shows is:

/assets/bundle-lib.en-US-3811faf517a516276061171b71f1bece.js:39294 TypeError: Cannot read property 'replace' of undefined
    at GlyphModel.write (/assets/bundle-fontello.en-US-7a44c51c4fd765fd4064540bf660a9e1.js:2549)
    at GlyphModel.computedObservable [as customHex] (/assets/bundle-lib.en-US-3811faf517a516276061171b71f1bece.js:15673)
    at settings_dialog_save (/assets/bundle-fontello.en-US-7a44c51c4fd765fd4064540bf660a9e1.js:1512)
    at /assets/bundle-lib.en-US-3811faf517a516276061171b71f1bece.js:2752
    at /assets/bundle-lib.en-US-3811faf517a516276061171b71f1bece.js:2797

The keyword is icons-10

[xang555]

same issue