No Subscription Renewal Button BUG

Plugin Version: 5.3.29

Gateway: PayPal Payments Standard Gateway

Options > Configuration:
Renewal period limit: 30
Upgrades period limit: 0

Subscription:
Finite 1 year

There is no 'Renew' your subscription button in the 'Your Subscriptions' page for subs that are due to expire within the renewal limit. Currently the only way a member can renew membership is to let the current subscription expire, then re-subscribe using the same account. Is this the expected behavior or am I missing something?