rebase -i does not use a commit it should

I tried to rebase some commits, when I found out it didn't pick all commits it should.

A distiled situation is this:

A (issues/links_footer)
B (issues/links-footer)
C
|  D (master)
|  |
|  |
|  |
|  |
| /
*

Here is the output of git log --graph --oneline --format="%h %d" master HEAD http://paste.pocoo.org/show/529305/

And this is the output of git log --oneline --format="%h" master..

7fb46fd 6efa164 50b5950

When I do git rebase -i master, it only shows the top 2 commits, but if I do git rebase -i 50b5950^, it does show all three committs.

Anyone knows whats going wrong?