I have an Indesign File, wherein I have 3 links connected to external URLs. While two links work absolutely fine after exporting as PDF interactive, one of them works fine only for part of the text.
I have suggested it below. The hand cursor displays till New Hire Ret and doesn't work for "ention".
Measurements and Reports
New Hire Retention
I've had the same issue and the ONLY way I can resolve it is to 'delete' the hyperlink, carefully highlight the all the text and re-apply the link. Then, it seems to work. (most of the time).
Did you write the link into the entry in the Hyperlink & Crossreference Panel?
What is the program you use to view the PDF?
As suggested above, you should recreate that "Hyperlink" with all the text selected. Do share the program you are using to view the PDF. If possible, share the file so that we can take a look as well.