You really should tell Ian about it. I felt the same way, that I didn't want to bother him with a little glitch I had since it was really no big deal, but he was very emphatic when he told me he wants to hear about any and ALL glitches, so they can investigate them and see what the deal is. So definitely email him about this. You won't be bothering him, you'll actually be doing him a service. NOT telling him about it would be the wrong thing to do. If you want you can tell him that I insisted you contact him about this.