Hey thanks for the feedback! Great you're liking the game and I'll definitely look forward to fan art! :D If you got Ending D, it sounds like you still have new areas to find. Endings A and B require you to delve even deeper......
That bug is really weird, because it came up during the bug testing too, but I was never able to replicate the bug and that's why I never really understood what causes it. Does this happen no matter where you are on that map, or just in some specific spot?
Scrolls can be kinda tricky. You are definitely on the right tracks. The first line is always "O LORD", but second and third line make things happen. Maybe you've seen some books mentioning such passages in the game?