It could be a combination of many small things.
Possibly it is just the teenage rebellious stage that the dog might just grow out off.
If ur very confident u had the basics properly installed before he started playing up.
If u are 100% sure ur basics are properly installed it will likely cure itself.
Otherwise a combination of wot foxy, Bo, Dunwater and Vss have said.
The 1 problem at 1yr old will be a bugger to chase down.
Joe Irving the famous spaniel trainer used to say the best thing u can do with a pup is chase it down and catch it.
Then it never learns u can't catch it.
If ur going to chase it down need to pick ur battles and pick a small field/contained area.
But we'll worth going back to the most very basic.
Lots of heel work, stopping when u stop, sitting and letting u go through gates/doors 1st.
If a dog is running circles, try standing in the corner off a field or on a narrow path ( wether fenced or high vegetation. I used to use forestry wheel ruts) so the dog physically can't get past u.
Does it sit/stay?
If so sit it up and walk 100, 200,400m as long as it sits/stays and recall ( when ur in a tight area) it should bomb back too u and can't run circles.
Do it numerous times to get it running hard.
But only if it is recalling when it can't run circles.
Even throw in some high value treats.
Wether chicken smoked sausage etc
Another thing which may work is put the long line on plus ur slip lead, take ur slip lead off.
I seen a few folk mention tiring dogs out.
I'm never a great believer in it.
A its bloody hard to do.
B all ur doing is making u have a fitter dog which is still not trained.
Mental stimulation can be more tiring than physical.
Ideally could do some dummy work or trying to find/hunt hard for scented dummies to tire it physically.
But if not recalling well it probably won't recall well with a dummy either.