Three separate reasons the Workspace terminal looked unscrollable:
- xterm falls back, on an alt-screen buffer whose program has not enabled
mouse tracking, to translating each wheel notch into a cursor-key press.
Inside a `claude` pane that reads as arrow up/down, so scrolling walked the
prompt history. A custom wheel handler returning false suppresses only that
emulation branch; real mouse reports come from a separate listener xterm
registers when the program does request wheel events.
- TerminalView never reconnected, so a server restart left the pane frozen on
its last painted frame — still live-looking, but swallowing every keystroke
and mouse report. It now re-attaches 1.5s after an unexpected close and
stops only on the server's `exit` frame; tmux keeps the session, so the
re-attach repaints in full.
- tmux repaints the whole pane, so xterm's own scrollback is always empty and
its viewport scrollbar renders as a groove with no thumb that cannot move.
Hidden, since scrolling there goes through mouse reports, not the DOM.
nntrivi2001
c7e934b4b4