Help window glitches out when i scroll #3567

Description

I just installed OpenCode, i wanted to see the all the avilable commands, and found a couple of visual bugs. Look at the attached Screen shots to see what I am talking about.

1. When looking at available commands using / and up/down arrow keys, it glitches out after a while (See steps to reproduce for more details), we see the commands go out into the next column or something - they just move to the right for some reason....

2. When using /help it looks beautiful when we open it, but the moment we scroll it turns into this glitchy thing... see the image to see what im trying to say.

OpenCode version

0.15.29

Steps to reproduce

Browsing available commands with / :

1. Type opencode in the terminal.
2. Type / in the input field
3. Press and hold up/down arrow keys to see all the suggestions.
4. See them do stuff that they were not supposed to XD

Scrolling when using /help :

1. Type opencode in the terminal.
2. Type /help in the input field and hit enter.
3. Try to scroll throught those list of commands.

Screenshot and/or share link

Operating System

Linux - Debain 13.1 with KDE Plasma Version: 6.3.6 (wayland)

Terminal

konsole