[Bug] Context limit error reported despite low actual usage with Claude 4.6 Opus 1M context

Bug Description
I keep runinng into issues saying that context limit is reached but I am using claude opus 1M and it's the beginning of the session so that's clearly not the case. When I run /context it typically says I'm at 10% or less of full 1M context

Environment Info

• Platform: darwin
• Terminal: cursor
• Version: 2.1.80
• Feedback ID: 2bf87abb-0cae-46ee-a1da-c8e6112dbd34

Errors

[{"error":"McpToolCallError: ### Error\nError: Ref e42 not found in the current page snapshot. Try capturing new snapshot.\n    at A27 (/$bunfs/root/src/entrypoints/cli.js:2772:19781)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-20T11:54:52.699Z"}]