Project settings window does not update the default presets until you click in it

1 Doc the project settings window below the inspector.
2 Create a default preset for a box collider and assign boxcollider 10 as its preset.
3 Click on boxcollider 10 preset and click the button 'Remove from boxcollider preset'

Actual result
Observe in the preset manager of the project settings window that the change is not displayed. This does update when you click on it however.

Expect result
The preset manager windows would update immediately to reflect the change.

Reproduced Versions
2018.3b10, 2018.3b6, 2018.3b1, 2018.3a1

Works in
2018.2.0f2,