Svelte. Popup two way binding to opened state does not work. (with demo)

[ievgennaida]

"dependencies": {
"framework7": "^8.3.0",
"framework7-svelte": "^8.3.0",
"svelte": "^4.2.0"
},
"devDependencies": {
"@sveltejs/vite-plugin-svelte": "^2.4.5",
"vite": "^4.4.9"
}

• Platform and Target: Chrome browse
• Live Link

https://codesandbox.io/p/devbox/ancient-worker-28d7qk?file=%2Fsrc%2Fcomponents%2Fapp.svelte%3A2%2C17&workspaceId=2d73e229-48af-4d68-8904-63f7078fb0e7

Describe the bug

Popup has invalid two way binding.
Backdrop is not disposed when

To Reproduce

• Open DEMO
• Click button to open popup.
• Click to close popup.
• Click to open popupagain.
• Click button in the sandbox two times.

See that backdrop is remaining.
See that popup cannot be opened second time.

Expected behavior

Popups can be opened and closed multiple times.