Oh, I have noted so many bugs with text effects. For me, the text-disappearing bug happens with italic, underline, and also certain animations. Another one that annoys me: when I use any text effect within the same bubble as a semi-colon, it adds a space before the last letter in the line???:
That must be an Ink thing as it doesn’t do that on Limelight: All my characters are |bold| original |reset| and |italic| not based |reset| on anybody I know;
Although italic doesn’t italicise, it just makes the font look bigger.