Yes they do but it doesn't really affect solid 1 pc designs but with it not being see through it was illegal up here where I live in Canada at least for the front. They let me keep my solid one on the back window. The other ones are just the letters and after a couple years the edges on my 2 letter L's are starting to lift.
I would just find a local place that does vinyl graphics and tell them what you want, what your concerns are and what kind of warranty if any they provide and hammer out a price. Worst case scenario you might have to get it re done every 2-3 years or so.
OLD SOLID ONE WITH RALLIART LETTERS IN WHITE.
CURRENT ONE WITH JUST LETTERS IN SILVER AND PC OF TINT ON INSIDE OF WINDSHEILD