Update
I've been asked to post more recent RayIDs, here they are (from 2024-05-02, around 19:30 UTC):
87da5fd72dbd357e
,87da606e9963357e
.The resource is https://i.sstatic.net/KnVuyq7G.jpg , accessed from A. This is one of the images I had fixed by accessing from B, but I have just discovered it is unavailable to A again. So I have just fixed it again by accessing from B. Nothing has changed; accessing from B fixed it for A, but now I strongly suspect this is a temporary fix that needs to be renewed.
87da6ced4f7d357e
,87da6e511844357e
The resource is the already mentioned image uploaded by me, accessed from A; the one I was not going and I'm not going to fix by accessing from B.
To be clear: I have disabled my workaround (the SOCKS proxy) in order to obtain the above RayIDs.