With such a big release last week, it as inevitable there would be some bugs. 1.0.18 is being released to address those: 1.0.18 -

Monster entries has spurious data under Natural Armor, Hit Dice and Breath Weapon
New classes were missing all spells from previous books
Adept spell list was broken
All core, base and npc classes with spells now have a linked list of spells that is a part of the class entry
Bookmark links on the side crashed on tablets
Bookmarks created in previous versions were not converting properly
Screen rotate now restores your location in the article
Cleanup of a bunch of articles based on feedback
A few more minor crash bugs were resolved

It's possible there are still bookmark defects floating about. I'll keep an eye out for them and fix them if they crop up