Steps to reproduce bug:

1. Install and run dev server pnpm install && pnpm dev
2. open http:localhost:3000 in browser X

• will add an automerge-url as hash: http:localhost:3000#automerge:...
• will add hallo, world to body

3. open http:localhost:3000#automerge:... in browser Y

• BUG: will not resolve handle and cause an empty page

4. open http:localhost:3000 in browser Y in another tab

• will add an automerge-url as hash: http:localhost:3000#automerge:...
• will add hallo, world to body
• now also the tab of 3. will be resolved and will show hallo, world

If i comment out new BroadcastChannelNetworkAdapter() I do not get this bug