NuGet manager stuck on retrieving search results

Hi,

the NuGet manager doesn't display any results, just the content of the local cache. Below the local cache pane, it's stuck on "Checking for updates..." and in the main result window, it's stuck on "Retrieving...". After some time, the "Retrieving..." label disappears. I tried searching by id as well, the same happens. I also tried removing all the packages from the local cache, didn't help.

I don't use any proxy. NuGet manager in e.g. JetBrains Rider searches fine.

This now happens for me both in LINQPad 5 (5.43.00) and LINQPad 6 (6.14.10).