Since adding new language noneunicode font, now some bold characters have either extra or lack of pixels.
I have only tested these characters
/tellraw @a [{"text":"!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\n\n","bold":true}]
This bug relates to MC-132644.