Auto-resume-at-reset checkbox is checked but session doesn't actually resume - requires manually selecting the session

When a session hits the 5-hour usage limit, the rate-limit dialog offers a checkbox to automatically resume the session once the limit resets. Checking it does not work reliably: after the reset time passes, the session does not resume on its own. It only resumes once I manually go select that session myself - no slash command or explicit "continue" needed at that point, just opening/selecting the session triggers it, meaning the automatic part of "auto-resume" never actually fires unattended.

Expected: with the checkbox checked, the session should resume on its own once the 5-hour limit resets, with no manual step required.

Actual: the checkbox has no effect - the session sits idle past the reset time until I manually select it, at which point it resumes normally.

Related but distinct from #86347 (which is about the checkbox not being shown at all in a concurrent session) - this report is about the checkbox being shown and checked, but the auto-resume behavior itself not firing.