Would you try with the following webview permission?
“requiredPermissions”: {
“webview”: {
“allow”: “yes”,
“domains”: [“https://.adobe.com", "https://.google.com”],
“enableMessageBridge”: “localAndRemote”
}
},
‘https://www.’ & 'https://www.adobe.’ are not valid domains.
‘*’ can be placed only at the toplevel domain.
‘enableMessageBridge’ is a part of webview permission.
Remain blank 
What’s going on?
https://.adobe.com → https://*.adobe.com
Would you try again?
Is the dialog successfully opened?
or
Would you add <webview …> element to your main document, not dialog, and see if it works?
Looking at the adobe document dialog is a must
Lets try to isolate the issue here by trying a basic example. Remove all the wildcards from the manifest domain. Use ‘www.adobe.com’ in manifest.json and src="https://www.adobe.com" for webview element. Does it work now?
Do you by chance have two webviews with same ids?
Has it been resolved？