Amend commit doesn't show previously committed changes in multi-root projects

Problem

When attempting to amend a Git commit in the IDE, the changes from the previous commit should show up in the Commit tool window. However, for projects with multiple roots (multiple git repositories in Settings (⌘ + , or Ctrl + Alt + S) > Version Control > Directory Mappings), the previous changes are not shown.

Resolution

To resolve this issue:

1. Check whether your project contains multiple Git roots.
   • Open the Settings window (⌘ + , on Mac or Ctrl + Alt + S on Windows/Linux).
   • Navigate to Version Control > Directory Mappings to view and manage the configured Git roots.
2. If you identify unnecessary Git roots among the listed repositories, update the configuration by removing the unwanted entries.

Additionally, you can track updates related to this functionality by voting for and following the issue IJPL-84044 on JetBrains' issue tracker.