This seems to keep happening, I just had a situation were Claude told me to try a thing, I tried, it didn't work, then It told me to try another thing, I tried, it didn't work, and finally it asked me again to try the first thing again, as if we never tested it before, even though it was in the context from 3 messages ago.
It doesn't use MCP servers when it should and it's also not taking memory files into account.
This is happening with /effort high and in really simple tasks... :(