APEX

I am having a display issue with a page when a shuttle is involved and the colspan attribute seems to not be taking effect.

First example:
http://apex.oracle.com/pls/apex/f?p=62184:1

In the above example, items text1, text2, and text3 are in three columns, respectively.
On the next line is the shuttle item in column 1 and a Go button in column 2.
All items are COLSPAN = 1.

Second example (where I have the problem):
http://apex.oracle.com/pls/apex/f?p=62184:2
Everything is the same except the shuttle item is COLSPAN=2. The "Go" button ends up in column 3 below Text 3 (which is correct) but the alignment of Text2 is at the end of the shuttle's width. Shouldn't it be more evenly spaced and partially above the shuttle if the shuttle is set to span two columns? Seems like the shuttle is still pushing Text2 to the right a little bit as if the shuttle is still displaying all in column 1?

Another flavor of the problem:
http://apex.oracle.com/pls/apex/f?p=62184:3
In this example, it's the same as above but the shuttle's width is increased to 300px but still with a colspan of 2. It clearly pushes Text2 to the right as if the shuttle is influencing the width of column 1. But with a colspan of 2, shouldn't it take up both column 1 and column 2 seamlessly?