Redmine

Forgot to attach info:

Here's a patch, but dunno it it's pretty enough?:

Index: public/javascripts/revision_graph.js
===================================================================
--- public/javascripts/revision_graph.js    (revision 9700)
+++ public/javascripts/revision_graph.js    (working copy)
@@ -65,10 +65,12 @@
                         'V', parent_y]);
                 } else {
                     // path to a commit in a different branch (Bezier curve)
+                    sign = parent_x > x ? 1 : -1;
                     path = revisionGraph.path([
                         'M', x, y,
-                        'C', x, y, x, y + (parent_y - y) / 2, x + (parent_x - x) / 2, y + (parent_y - y) / 2,
-                        'C', x + (parent_x - x) / 2, y + (parent_y - y) / 2, parent_x, parent_y-(parent_y-y)/2, parent_x, parent_y]);
+                        'C', x, y + 4, x, y + 4, x + sign * 4, y + 4,
+                        'S', parent_x - sign * 8, parent_y - 4, parent_x - sign * 4, parent_y - 4,
+                        'S', parent_x, parent_y - 4, parent_x, parent_y]);
                 }
             } else {
                 // vertical path ending at the bottom of the revisionGraph

I can confirm the issue with the Git-Backend. In my case, there are about 30 commits between the parent commit and the new branch, which makes it impossible to guess where the two lines meet.