[Bug]: Schema Compare Uncheck and then Check all causes crash

[MarkSimUM]

Description

When unchecking and then ch

SchemaCompareBug.txt

ecking all schema compare changes, the system crashes

Steps to Reproduce

1. Schema Compare
2. Select 2 databases
3. Uncheck all
4. Check all

Affected Area

• Connection dialog (SQL Server | Azure browse/Fabric browse)
• Query editor
• Query results panel
• Object Explorer
• GitHub Copilot integration
• Preview/Edit data
• Table Designer
• Schema Designer
• Schema Compare
• Local SQL Server Container provisioning
• SQL database in Fabric provisioning
• DACPAC/BACPAC export/import
• SQL Database projects
• Query Plan Visualizer
• Other (please describe below)

If you selected "Other", please describe the affected area

No response

Environment Information

Version: 1.120.0 (system setup)
Commit: 0958016b2af9f09bb4257e0df4a95e2f90590f9f
Date: 2026-05-12T20:17:22Z
Electron: 39.8.8
ElectronBuildId: 13870025
Chromium: 142.0.7444.265
Node.js: 22.22.1
V8: 14.2.231.22-electron.0
OS: Windows_NT x64 10.0.26100

Confirmation

• I have searched existing issues and couldn't find a match
• I want to work on this issue

[ghiscoding]

probable duplicate of #19956

[Benjin]

Yup, looks like it.

@MarkSimUM, are you able to repro the issue in a schema that you're able to share?