we have a type of "super glue" that we also use, it's scotch-weld CA40H that can form pockets like that sometimes but never heard of it staying tacky for months unless it goes bad, it's used for acrylic and rubber that is tacky like that when it gets old, has to stay cold for storage, find out if that's what they used, if so they probably let it get old or hot, and this stuff isn't cheap at all. and for iloveoscars, are the streaks on the outside of the glass?