xautolock locker function stops working after a minute

I have a slightly different way of using xautolock: After I lock the screen (using i3lock in my case), I want the display to turn off after some period of time of inactivity. AND I want it to re-turn off if it detects activity, turns on the screen, but the computer isn't unlocked. Here is the script I have:

/bin/bash

function lockfunc {
    if [[ "$1" = -sleep ]]; then
        i3lock -t -i $backgroundimg &&  xautolock -time 1 -locker 'xset s activate' &
        while [[ $(pgrep -x i3lock) ]]; do # loop while computer is locked
            echo $(date) '| i3lock running'
            if [[ $(pgrep -x xautolock) ]]; then echo $(date) '| xautolock running'; fi
            # if $(pgrep -x xautolock); then echo $(date) '| i3lock running'; fi
            sleep 5
        done
        echo $(date) '| exit i3lock while loop'
        xautolock -exit # stop xautolock when unlocked
    else
        i3lock -t -i $backgroundimg
    fi
    return 0}

lockfunc -sleep

While the behavior mostly works, the huge issue right now is that **after (exactly) one minute of the screen being off, it turns back on without any interaction.** Behavior timeline:

00:00 -> start the lockfunc
01:00 -> screen turns off
02:00 -> screen turns on
07:00 -> screen doesn't turn back off, stop test

The debug echo statements in the script above didn't really show anything changing during that time: both i3lock and xautolock were still running the whole time. Any ideas why this is happening?