Freddy,
The thing I immediately notice is that second URL is *missing* the "starts_with" parameter. It should have a "starts_with=B" just like the original URL. Without that parameter, it looks like clicking on the next page will start you back at the beginning (instead of continuing with letter "B")
So, this looks like a bug, but I'm not entirely sure where this bug exists.
I'd recommend logging a ticket in our JIRA (
https://jira.duraspace.org/projects/DS/) so that we can dig into this further. I'm not sure of a fix at this time, but hopefully this at least helps narrow down the problem. If you don't yet have a JIRA account, you can request one by emailing
sysa...@duraspace.org.
Thanks,
Tim