Realize old issue, but same issue exists. Looks like firmware issue. WD should check.
Found a post in the WD Community that referenced the issue and actually solved it for me. However, I still think it’s a firmware issue and I don’t particularly like the fix. Something else to have to remember. The fix is to set the browser to zoom level 100 percent. Looks like anything other than 100 %, as i’m a little blind, I default all my browsers to 125%, but nonethless, if I set the zoom level to 100%, then I can scroll through all the files. If I set to anything else, It stops at 30 files.