on the changelogs pages
when input big values for revision to display , webpage showing wrong
for some value it can be fixed by scaling page to less size
to demonstrate error try this.
needed more than 100 revs.
set 25 revision to display, then change scale web page, with CTRL+MOUSE WHEEL
you see , that revision graph was moving back from changelogs list.
now, set value like 40, you see no revision graph, then set lesser scale, in some values , graph appeal