Water seeping under shower framework

It really gets me that the manufactures can't come up with a better idea for a shower. The water seeps under the glass frame work (of course there isn't any caulking) and onto the floor. Did it ever occur to them to install a gasket or caulk around the bottom?

It just irks me on a brand new MH these things aren't seen as problematic to them. It would be different if they had a molded lip running around the outside to direct the water back into to shower.