Texts disappear

[Başak23554479xisc]

Hello, some texts in my pdf file disappear. It's showing up for a second and then "Puff!", disappears. I tried everything but can't find a solution, please help.

[radzmar]

Could you please provide more details. Are you on Windows, macOS or …? Does this happen to all or only certain PDFs and what do those look like, when it has happen?

[Başak23554479xisc]

English is not my first language so sorry for any mistakes.

Well, I tried it on Android, iPad, Win7, and Win10. In Android and iPad the text doesn't appear at all. In windows, the text only appeared for a second and disappeared. I got it on camera (Slow-mo). Since It could be seen for a second, I don't think the pdf file is corrupted. Not this file though, I got this problem different files for too. Huge thanks for responding.

Here is the Youtube link to my problem: https://youtu.be/_1xJnj2W3g4

[Başak23554479xisc]

Not *just* this file I'm sorry 💔

[radzmar]

To me it looks like an behavior the author of this particular file has programmed. Maybe be some kind of Rich Media content or so? It's really hard to tell without having the PDF available.