Cannot script stored procedure while restoring another copy of current db

I have some large DB that I need to restore to another db from time to time, this process take some time to conclude. The annoying thing I found out in last version of SSMS is that I cannot script any sp of the current db while I do this restore. In my case I have the current db named FleetXS that is online and is in use and I do the restore of backup of this db with the date of 2 days ago in other db named Fleetxs_Restore. For all the time of the restore it's not possible to script any sp of db FleetXS with the weird error > Cannot open database "FLEETXS_restore" requested by the login. The > login failed. Login failed for user 'anna'. (Microsoft SQL Server, > Error: 4060) I have no need to open the database FLEETXS_restore that even is not actual to date, I operate within my current database FleetXS that is online, why on the earth my login "requested db FLEETXS_restore"? Is there any workaround or should I wait for hours when the restore finishes to be able to get the text of sp of **another** database? > Microsoft SQL Server 2019 (RTM-CU10) (KB5001090) - 15.0.4123.1 (X64) > Mar 22 2021 18:10:24 Copyright (C) 2019 Microsoft Corporation > Standard Edition (64-bit) on Windows Server 2016 Datacenter 10.0 > (Build 14393: ) (Hypervisor) - SQL Server Management Studio 15.0.18390.0 - SQL Server Management Objects (SMO) 16.100.46521.71 - Microsoft Analysis Services Client Tools 15.0.19714.0 - Microsoft Data Access Components(MDAC) 10.0.19041.1 - Microsoft MSXML 3.0 6.0 - Microsoft .NET Framework 4.0.30319.42000 - Operating System 10.0.19043 I do not use SSMS to do the restore, I use my own script. There are two backups to restore, full + diff. I do full with norecovery and diff with recovery.