Trend pen controls not visable

We are running 7.5.6 b3 I noticed today that our trends no longer show the pen controls on the left of the trends anymore. We dynamically assign the pens to the trends much like is done in your Chart to Graph example and it has been working great. I was wondering if there was something changed recently that might have introduced a bug in the system. If I simply put trend on page and drag tag over the pen control shows up as expected.
Any ideas?

Well installed 7.5.6 build today and the issue is no longer there.