I have have the font issue, too. (Also in in CoC 7e.)
I just copied this piece pf text from the V5 PDF in notepad++ and change the encoding from the UTF-8 to ANSI.
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Storytellers should use common sense when stacking modifiers. At some point, no amount of gilding the
lily helps accomplish a task; likewise, characters’ basic
gifts can carry them through seemingly dire circumstances. Consider capping modifiers at plus or minus
2 to the Difficulty, or at three dice added or removed
from the character’s pool. This guideline applies to
ad hoc Storyteller modifiers, not to modifiers from
specialties or other specific rules.