Secret Flags/Combos + Smart Screen Scrolling

Er, what do you mean? To the best of my knowledge, no flag inhibits Link's movement.

Unwalkable combos on edge of screen that make them walkable, but when like triggers a secret they'll become walkable. He'll won't be able to return the way he came when he checks out the secret.

.........this'll take forever to fix.

What, you're saying it's hard to program precognition into the game player? Sheesh.

The solution to this one requires, well, performing the convoluted Screen Secrets process on a distant non-loaded screen as soon as Link tries to walk into that screen.

(I know, hence the "precognition" bit 😉)

For this kind of reasons I don't use Smart Screen Scrolling. I remember I couldn't make a sidewarp with it if the screen next to the sidewarp had unwalkable tiles. Maybe that's fixed already though.