[Bug] "AdvancedMarkerElement: map invalid: not an instance of MapsApiMap"

Description

We keep getting this error:

AdvancedMarkerElement: map invalid: not an instance of MapsApiMap

I'm not sure what's causing this issue to occur, but we keep running into it. There are a few things to note about our usage:

• We're using the AdvancedMarker to create a TooltipMarker component
• Our app renders a list of pages, each with their own Map, each receiving a unique location

At first I thought the error was perhaps being caused by some mounting/unmounting behavior that happens when switching between pages, or by how we implemented TooltipMarker, but I'm honestly not sure.

Steps to Reproduce

https://codesandbox.io/p/sandbox/advancedmarker-example-cyycp9

Getting the error to show up consistently is... not easy. The codesandbox linked above shows how the app is set up at a basic level, i.e. multiple pages rendering their own Map and a basic TooltipMarker implementation using AdvancedMarker.

Environment

• Library version: 1.1.1
• Google maps version: weekly
• Browser and Version: Chrome 128
• OS: Mac

Logs

No response

Start with the linked CodeSandbox and its multiple-page Map and TooltipMarker setup, then inspect the AdvancedMarker integration while reproducing the intermittent map-invalid error during page changes. Done means identifying and resolving the issue so the error no longer occurs in the reproduced setup, with relevant regression coverage if an existing test entry point applies.