Esc (remapped Caps) registered as Left Control when quickly pressed
As the title says, Escape(remapped Capslock) got registered as Left Control when quickly pressed with other keys combined (like Caps + J, or other alphabetical keys) regardless of the mode and time delay. This can be checked through xev and restarting the process through systemctl repeatedly (using udevmon).
Though my suspicion at the start was the delay time for the key but turns out it doesn't give any effect.