Occasional white flash in terminal UI rendering

Summary

Claude Code occasionally produces a brief white flash during terminal UI rendering.

The flash is very short, but noticeable. It appears intermittently rather than continuously, and seems related to screen redraw/rendering behavior.

Environment

• Claude Code version: 2.1.98
• OS: macOS 15.6.0 (Darwin 24.6.0)
• Shell: zsh
• Terminal: Apple Terminal
• TERM: xterm-256color
• tmux/screen: no

Observed behavior

• The terminal UI occasionally flashes white for a moment
• The flash is brief and intermittent
• It looks like a rendering redraw artifact rather than intentional UI output

Expected behavior

• Rendering should remain visually stable
• No brief white flash during normal interaction or screen updates

Reproducibility

Not consistently reproducible. It happens occasionally.

Impact

This is a visual distraction and makes the terminal UI feel unstable, even if functionality is otherwise unaffected.

Notes

This may be related to terminal repaint behavior or frame clearing during UI updates.