Techtree Requirements

Ok this is a pretty simple situation.
I even took a screenshot.

So, for one of my towers I have four requirements. Normally, when one tries to construct a building with requirements unfulfilled, it shows all the requirements. This isn't the case for one of my buildings. After about halfway through the 3rd requirement, it cuts it off

Now at first I just assumed the four requirements were causing it because it is pretty lengthy... but is there something I could do to show all four requirements?

Hidden information:

If that is the only tower with four requirements, it may be too many to display. But if you have another tower with 4 that displays correctly, examine the differences between them. Maybe the tooltip on that tower is too long to display everything? Also, if you take off the fourth requirement on that tower, does the third one display correctly or does it still get cut off? Do the third and fourth requirements have associated level requirements like the first two?

Too many color tags -> tooltip is too long.

I managed to make a tooltip showing SEVEN requirements and a description, so I know it's possible.

OK cool so it is possible to have several requirements.
Too bad I can't actually write in the requirements.

While we're on the subject of tech-tree req.s:
How can you make a requirement that says something along the lines of "-one only allowed."
Take for example Unit A.
After training Unit A, I want the the tech-tree req. to say "-Only one Unit A allowed"

If anyone has played Dark Deeds Final, the Knight is a perfect example of this.

In the "Requires" bit, are you sure you did |cffffff00- Requires:|r?