A GitHub issue claimed that Claude Code was destroying uncommitted changes with `git reset --hard origin/main` every ten minutes, but the culprit turned out to be a separate tool the reporter had written.
Claude Code's Cowork feature has been reported to create VM bundles as large as 21GB on macOS without warning. Deleting them only causes regeneration, and CPU usage can climb to 55%. On macOS 26.x, some users also hit VM startup failures caused by vsock connection issues.