Scroll bar jitter

[dennmar]

Describe the bug

While continuously scrolling down (or up) a large portion of text, the scroll bar will occasionally jitter in the opposite direction.

Attach save file

N/A

Steps to reproduce

1. Navigate to Credits at the title screen using the right arrow key (→).
2. Press and hold down the down arrow key (↓) to scroll down.
3. The blue scroll bar at the left side of the credits window will occasionally jump upwards for a brief moment while scrolling downwards.

Expected behavior

When scrolling downwards, the scroll bar should only move downwards (and only move upwards when scrolling upwards).

Screenshots

Scrolling downwards through credits:

Continuing to hold downwards scroll through credits and "jitter" is observed where the scroll bar is suddenly higher for a brief moment:

Versions and configuration

OS: Ubuntu 20.04 (with WSL and Windows 11)
Game Version: a60d305
Graphics Version: Terminal
In-game Language: English

Additional context

Sometimes, the entire scroll section including the scroll bar, border (|), green up arrow (^), and green down arrow (v) appears to move when scrolling. This seems like a potential cause for the jittering scroll bar. It seems like all the characters in the scroll section are displaced when the bug occurs (ex: when scrolling downwards and the scroll bar seems to jump up, the green up arrow (^) is replaced with a border character (|), the green down arrow (v) is one position higher, and there’s an empty space where the green down arrow (v) used to be). The actual lines of text being scrolled through don’t jitter on the screen.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions. Please do not bump or comment on this issue unless you are actively working on it. Stale issues, and stale issues that are closed are still considered.