When navigating to next screen the label next to back button flashes and returns to back label

[Jukez17]

iOS the back button label stopped displaying the correct label it shows correct one for split second flashes and then changes back to the back label. Couple days ago everything worked but now its broken.

Here is my navigation container: https://gist.github.com/Jukez17/667bc11a544d237ab153fa15316afdba

What's happening: https://user-images.githubusercontent.com/43128825/137480674-7d1f8e1d-3b75-4a98-a0b2-a2e3eecbf9b4.mov

What I'm expected to happen: https://user-images.githubusercontent.com/43128825/137480850-522b3b1d-df59-41ad-89e1-546cf7c13929.mov