symbols does not appear when i export to pdf

[sotoraul]

after some update long time ago, symbols like link appears but when i export to PDF doesnt appear.
astrological symbols after the update become colored and the same issue, when i export to PDF doesnt appear.
astrologial appears in PDF only with dejavu fonts but not with link symbol

some other symbols doesnt appear when i export to pdf

[LeroyG]

Same user and similar question in Symbols change and appears but when i export to PDF disappears

Please, follow the previous link to answer.

sotoraul@gmail.com, It is better to concentrate the same question in one place. You can add the new info (if there is) in the previous question.