Reproduction steps:
1. Create a new Unity project.
2. Create a new object (e.g. sphere).
3. Open "Window > Frame Debugger"
4. Click "Enable".
5. Select the object (Step 2) in a debugger
6. Change the object name(cube).

Actual result(Picture attached):
- Left side list shows an old name(sphere).
- Right side of the window shows a new name(cube).

Expected result:
- Both sides shows the same name.

workaround:
- Click the "Enable" button two times.

Reproduced with:
5.6.0a2
5.2.5f1

Resolution:
Frame debugger should be re-enabled to capture new data if changes are made in the scene.