Alternate screen issues in iTerm2

[jayadamsmorgan]

Issue appears only when entering alternate screen mode in iTerm2, inputs are messed up and the terminal state is not recovered on exit, outputting just escape codes after. Can be reproduced by running notcurses-demo. The Terminal.app and Wezterm are working fine on my system.

Tried manually setting iterm2 as the terminal type instead of xterm-256color but it didn't help and notcurses-info was able to identify iTerm2 even without it. Other settings are the same as described in TERMINALS.md

COLORTERM=truecolor
ITERM_PROFILE=Default
ITERM_SESSION_ID=w0t1p0:100AB475-810E-4F51-80F7-2D0A564DC287
LANG=en_US.UTF-8
LC_TERMINAL=iTerm2
LC_TERMINAL_VERSION=3.5.10
TERM=xterm-256color
TERMINFO_DIRS=/Applications/iTerm.app/Contents/Resources/terminfo:/usr/share/terminfo
TERM_FEATURES=T3LrMSc7UUw9Ts3BFGsSyHNoSxF
TERM_PROGRAM=iTerm.app
TERM_PROGRAM_VERSION=3.5.10
TERM_SESSION_ID=w0t1p0:100AB475-810E-4F51-80F7-2D0A564DC287

notcurses 3.0.11, iTerm2 3.5.10, macOS Sequoia 15.1