Environment

• wmux: v0.8.7
• Shell: WSL running Ubuntu

Behavior

Mouse wheel scroll does not work inside Claude Code (or any full-screen TUI on the alternate screen buffer).

Scroll works fine in normal shell panes. PgUp/PgDn works as a workaround.

Expected behavior

Mouse wheel scrolls the terminal output, same as in normal panes.

Notes

This was explicitly fixed previously — the v0.7.21 release notes mention the same bug and describe the fix (only intercept wheel on normal buffer, pass through on alternate screen). Appears to have regressed in v0.8.x.