BUG: Negative Time Displayed in Submission Countdown Timer

**Description:**

We encountered a UI bug where the countdown timer for the next set of submissions displays a negative value for seconds. This happened right after hitting the submission limit for the day.

**Steps to Reproduce:**
1. Submit until the daily limit is reached.
2. Observe the countdown timer for when submissions will be available again.

**Expected Behavior:**
The countdown timer should not display negative values. It should reset cleanly to `0 seconds` or roll over appropriately.

**Actual Behavior:**
The seconds field briefly or persistently displays a negative number, e.g., `-1 seconds`.

**Screenshot:**