the location of the text change

[Татьяна5EA9]

Hi, when i open file (pdf) which was sreated in Illustrator CS6 or Illustrator 2019, the location of the text change (hyphenation changes, the text looks different from the source). The pdf was saved with function Illustrator Default. I have Illustrator 2021. Could you tell me it is happened because it is different version or it may be other a reason?

[Monika Gause]

So you are not opening the PDF, but an Illustrator file.

Is the correct font installed?

Can you perhaps show screenshots?

Which language is the file? Your system? Illustrator?

[Mohammad.Harb]

If you wan to edit the file in a newer version, why did you save it in pdf format? Save it in the native Ai format .Ai file