It's possible to press the STAGE ALL & COMMIT button twice in the Commit-confirmation popup, which then causes a second (empty) commit with the same message as the first one.

This happened to me a couple of times recently (maybe accentuated by me running a Debug build of SourceGit which possibly makes it slightly slower). After pressing the button the first time, nothing seemed to happen for a second or so and there was no indication that it was processing, so (impatiently) I pressed the button again, which led to this issue...

This is worsened, of course, if the initial button we pressed was COMMIT & PUSH... 😅

NOTE: This issue is perhaps somewhat related to #1032. (But for the current issue I was not really "double-clicking", instead I clicked the button again later because I thought the first click had not been registered.)