1.7.3 terminal display incorrectly

[tianyuanhao]

Describe the bug When using journalctl, the bottom row shows a white background beyond the end of the line.

To Reproduce Steps to reproduce the behavior:

1. Use ttyd 1.7.3
2. Enter journalctl↵

Expected behavior

lines█1-33▒

Screenshots

lines█1-33▒█████████████████████████████

Environment

• Browser: Chrome 103.0.5060.114

Additional context xtermjs/xterm.js#4120