I just bought a few 'Glass Style Motif Fragments' and ended up with 18 of them so I thought I'd try and make a motif! I bought the resin-thing from the mystic for 10k, used it and NOTHING happened. Except for the resin being gone, along with my 10k of course.
All 18 pages left intact, no motif to be found.
Clearly I'm the first player in ESO history to ever accumulate such a vast amount of pages (10+), because I can't find any post of this bug anywhere.
I could waste another 10k and split my stack and just have exactly 10 fragments on my character and hope that'd work, but I rather get this issue fixed. I've filed a bug report, but I assume they're never read so by leaving this post here maybe I can get a discussion started that might get someones attention and in a few years or eight have this bug fixed so we can start making motifs.