Debug screen opens when in your inventory, but not any other GUI

The bug

Pressing F3 in your inventory opens the debug screen, but not when you are in a chest, etc.

Steps to reproduce

1. Open your inventory

2. Press F3 --> ✔  Debug screen opens

3. Press F3 --> ✔  Debug screen closes

4. Open a chest

5. Press F3 --> ❌  Debug screen does not open

6. Press F3 – > ❌  Debug screen does not close