Adobe Acrobat Reader

Accurately exporting all fields correctly (including UI design) of a PDF into various formats. There tend to be quirks with some exports.

Choosing the right encryption type. This can get a little tricky.

Getting picky with Acrobat custom fields when you're trying to do something out-of-the-box (during PDF creation).

I'm not a fan of needing to connect to Adobe in order to work with PDF files. While Adobe claims its systems are secure, there is always a doubt in my mind about exposing documents with sensitive data in them to another potential source of vulnerabilities.

The licensing for DC is not something I care for. I don't like the transition from buy it once and own it, to paying an annual licensing fee. Seriously, I really don't like that aspect of Adobe's approach to licensing their software.

I have experienced sporadic issues with form field drop-down menus after resizing forms for display. This problem has been around for a while, and I have yet to see a solution for it. For example, I may have a drop-down with four options, but when I resize the display for the entire page, I may be able to see only one and a half options.

Doesn’t always function if I’m not the administrator

Many features are not available without upgrading to more expensive versions - especially the lack of more editing available in this version.

Frequent spam notifications on updates and other Adobe-affiliated products can get quite persistent and annoying.

There is a room for improvement in filling documents and signature

There is a room for improvement in self updating

There is a room for improvement related to computer resource management

For a while the browser integration was not stable and crashed periodically (this issue has been fixed in the latest updates)

Basic PDF editing functionality is missing and could be very advantageous. Just add a few watered-down editing features of Acrobat Pro.