NO_FLICKER_MODE=1 breaks click-and-drag terminal scrolling on remote desktop

Summary

Click-and-drag to scroll the terminal works normally without NO_FLICKER_MODE=1, but stops working when the environment variable is set.

Environment

• Environment: Remote desktop from Android phone
• NO_FLICKER_MODE: 1 (enabled)
• Behavior: Click-and-drag scrolling broken (works without the flag)

Steps to Reproduce

1. Enable NO_FLICKER_MODE=1
2. Connect via remote desktop from Android phone
3. Attempt to click and drag to scroll terminal up/down
4. Scrolling does not work

Expected Behavior

Click-and-drag scrolling should work the same with and without NO_FLICKER_MODE=1.

Related Issues

• #42297 — No-flicker mode mouse scroll input misinterpreted as text
• #41965 — No-flicker rendering destroys terminal scrollback