can't add tags with custom delimiters, every keycode returns 229, 0 or unassigned.
Most of all, it is a UX bug on mobile version because event keycodes doesn't match any character in mobile , so the only way to add a tag was addonBlur and you had to tap at the tag input again to submit another to the list.
It happens with android soft keyboards, was tested in browserstack and mobile devices on hand.
this issue is linked to issue #97
added some links as examples:
https://stackoverflow.com/questions/36753548/keycode-on-android-is-always-229
https://bugs.chromium.org/p/chromium/issues/detail?id=118639
https://social.msdn.microsoft.com/Forums/en-US/d9ac5d52-55f5-4e8f-b074-22323834a09c/keydown-event-always-returns-keycode-229?forum=vssmartdevicesvbcs