I'm having a bug with git gui. Please help me find the right place to report it. version stats: $ git gui version git-gui version 0.21.GITGUI $ git version git version 2.16.2 how the issue is produced: using Git Gui preferences Additional Diff Parameters set to --ignore-all-space save, exit and relanch gui. select an unstaged change where the only differences are ignored based on --ignore-all-space one example of such a change is adding 4 space to an existing blank line this gives the misleading message "No differences detected." and triggers a rescan. This results in losing the place in the unstaged changes list and a rescan that does not change the list.