If you type here before login/signing, once you do it, all typed text is wiped out. Really frustrating. Now, the other Acrobat bugs:

Adobe Acrobat Pro DC issues: slow scrolling - failed saving - document not found. Adobe Acrobat Pro DC 2019.010.20069 and previous ones on macOS has some issues, which have been around for ages. They are really frustrating:
 
1. Scrolling vertically becomes excruciatingly slow if "Edit - Find" (Command F) is opened. Even on powerful Macs, like iMac 27-inch Retina 5K display 4.2 GHz with 40 GB RAM and fast 2 TB internal SSD from Apple (mid 2017).
 
2. If you open a PDF document, then edit it (for instance, using "Highlight text" fluorescent marker or "Tools - Comment - Arrow") and then change its name in Mac Finder, "File - Save" (Command S) does not work, and even crashes Acrobat. Why is this useful? Because sometimes you may download a scientific paper with a generic useless name, open it to read and mark it as indicated above, and then rename it with useful name and finally save it.
 
2. Similarly, if you open a PDF document and close it, it shows in "Home - Recent" and "File - Open Recent File", as expected. But if you change its location in Mac Finder, moving it to other place, if you try to open it that way later on, it does not open and is indeed wiped out from the list with the error: "The file you are trying to open is no longer available and cannot be opened". Why is this useful? As in the example above, sometimes you may download a scientific paper, mark and rename it as indicated above, and then move it to other place in the disk for final storage.
 
It would be great if such issues could be fixed. Other applications like Microsoft Word do not have them and work OK.