I want some of my apps use the function keys on touchbar by default. I could easily do it from Setting > Keyboard > Shortcuts > Function Keys and there i could add my app.
After my addition if i open that app i see that touch bar not refreshing itself. App Control settings stuck at touch bar. The only way that i can get my function keys is pressing one-time-only fn key. After first press the function keys are appear and don't disappear as expected.
If i switch to a default App Control Touch Bar application the function keys stuck now. As the same way i need to press one-time-only fn key to get my App Control settings on touch bar.