New update think working with title chapters (content link)

hey. I’m just wondering. Is it I need to update my iOS (coz I still in iOS 11.2 if I’m not mistaken) or is it the problem with new update of this Adobe app on iPhone that it will be fix, or it will not be fix? About the title chapters. When I’m using the former version of Adobe, I press the title chapter and it will be automatically bring to there, bring to that exact page, I mean. But now, not anymore. Does it will be fix or now we need to always just to adjust the page number without depending on the title chapter (that is kinda hyperlink, right?) if I need to read the documents that is kinda nearing 100 pages. Please, I really hope for its to be fix