Same for me, it's been I think at least two weeks since it started behave randomly. Sometimes it's blank, sometimes the first page worked but the following were blank, now it only shows one page. It's annoying because without being able to check older updates I'm missing a lot of releases.
If it is done in order to lighten the load on the servers I'll understand and accept it, but a clarification would be nice.
Edit: turned out that, at least in my case, the problem was related to having the language filter set to all. Selecting only few languages solved it. For reference: https://mangadex.org/thread/313392/1