yes i did, the rear lighter when put into the front socket, is not "holding"
when it is in back socket, it is "holding"

and vice versa - front lighter put into rear socket is "holding"
while having it in front socket is not "holding"

 

Maybe the socket is worn and just need to be changed. You might even be able to bend the metal a little to fix it. Guessing the car was owned by a smoker who used it a lot or maybe stuck and odd shaped charger in it and bent something.

 

both lighters are like brand-new, probably bending issue, however this function is smth like temperature releasing metal stuff, so if i will start bending wondering it even will work as expected.