What
The scroll keys have a new option, yieldsPageKeysWhenContentFits. When it is on and the content is no taller than the visible area, Page Up and Page Down (scroll:pageUp and scroll:pageDown) are not used for scrolling, so another part of the screen can use the key. One place in Claude Code turns this on.
Why
Where there is nothing to scroll, pressing Page Up or Page Down can now do something useful instead of nothing.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The finding does not say which screen enables the option or what the keys then do there.