turn signals stop when pressing brake

This happens when the bulb or socket for the blinkers either on the front here rear has melted and is allowing the contacted to touch please remove the rears first and inspect. here are guides to help you fix it:

https://www.2carpros.com/articles/brake-lights-not-working

and

https://www.2carpros.com/articles/turn-signals-not-working-blinker

and

https://www.2carpros.com/articles/no-tail-lights-exterior-running-lights-tail-lights-out

Let us know what happens and please upload pictures or videos of the problem.