Cannot run PG script from file after upgrading to ADS 1.11.0.

Error:
Execution failed due to an unexpected error:
Unhandled exception while handling request method query/executeDocumentSelection: "No file corresponding to the given URI"

At the same tme, script successfully executed in New tab, while file not saved yet.

Repro:

1. Open new tab (Ctrl+N) , connect to PosgtreSQL.

2. Type "select 1;" and Run - success!

3. Save file (Ctrl+S) , reconnect (why it disconnects ??? this is bug too, I suppose) ,
   then try to Run again - and get error:

   Request query/executeDocumentSelection failed.
   Message: Unhandled exception while handling request method query/executeDocumentSelection: "No file corresponding to the given URI"
   Code: -32603

Extension Info:

Name: PostgreSQL
Id: microsoft.azuredatastudio-postgresql
Description: PostgreSQL extension for Azure Data Studio
Version: 0.2.1
Publisher: Microsoft
VS Marketplace Link: undefined?itemName=Microsoft.azuredatastudio-postgresql

Azure Data Studio
Version: 1.11.0
Commit: 460c739a8d90bdbbde39e01abfb8ecdc278ea787
Date: 2019-09-06T18:08:50.974Z
VS Code 1.37.0
Electron: 4.2.9
Chrome: 69.0.3497.128
Node.js: 10.11.0
V8: 6.9.427.31-electron.0
OS: Windows_NT x64 6.1.7601