Setting key to undefined doesn't actually change it

[Kitenite]

Google search terms

extend-chrome setting undefined

Describe the bug

When setting a key in useBucket to undefined (or null), the value doesn't get changed. It resolves to the previous value instead.
Removing the key works.

How do we reproduce?

This is my bucket

export interface StateValue {
	sidePanelTabId: number | undefined
}
export const stateBucket = getBucket<StateValue>('EXTENSION_STATE')

When I set the value to undefined (in async context), the value does not change in the valueStream

stateBucket.valueStream.subscribe({sidePanelTabId} => {
		console.log('stateBucket changed', obj) //  First run: undefined, 2nd run: 1, 3rd run: 1, 4th run: undefined
})

stateBucket.set({sidePanelTabId: 1})
stateBucket.set({sidePanelTabId: undefined})
stateBucket.remove("sidePanelTabId")

Expected behavior

The third run should print undefined instead of 1.

Actual behavior

The third run prints the last value: 1

Screenshots

Please complete the following information:

• Library Version: "^1.5.0"
• Operating System: MacOS Sonoma 14.1.2 (23B92)
• Browser: Chrome
• Node Version: 18

Additional context

Run in the background script