Well I reported a bug with scroll creation. Yesterday from my PC I meet a wizard, had the required items for the scroll. I was rewarded with a blank screen with only the wizard header. My items were removed but no scroll was given. So I tried again as I had more items. Again same result. Items gone and no scroll. This happened to me about a month ago while on the mobile version on my phone as well. I thought it was a fluke then but not now.
This was on Dwilight.
You need to report this to the bugtracker.
He did, and posted here for good measure