Thank you for the idea. Changing "Account > Preferences > Items Per Page" to 20, 50 or 100 does indeed bring back pagination but setting it to "Infinite scroll" still fails and also fails on Chromium-based Firefox on the same computer. I didn't check my other computers until now but they do not present the same issue so it's either a bug in an API or a bug in my display driver but the latter hasn't changed and this just started occurring. I guess I'll have to live with 20 or 50 since this? bug may never be corrected.
Jim Wilson