Rate-limit auto-resume checkbox shown in one session but not in a concurrent session

When hitting the usage limit in two concurrent Claude Code sessions around the same time, one session's rate-limit dialog showed a checkbox to automatically resume when the limit resets ("自動的に続行する" / reset time e.g. "19:40"), while the other concurrent session's dialog did not show this checkbox at all — just the plain "usage limit reached" message.

I couldn't find this distinction documented anywhere (changelog, docs). Is this intentional (e.g. gated by session type, client, or rollout stage), or a bug? If intentional, please make the option available consistently across all sessions.

Environment: Claude Code desktop app (Windows), two sessions running in parallel against the same account/project.