On one of the many afternoons we spent in EPCOT's UK, I noticed the windows above the Rose & Crown looked like this...
Does anyone know why the window panes look like this?
What do you mean by "like this"
You did say "ripple" right?
They are used to distort vision looking through them.
Is it common?
I don't know if it's common, but WDW uses it at the Rose and Crown to replicate the window panes that were in use years and years ago.
We do have heavy, wavy windows here in very old homes that have been preserved.