Android chrome:

It is Chrome dev tools for mobile. But on real device all exactly same.
Reproduce:
- in Chrome open https://unrealarchive.org/unrealscript/index.html#ut99v469c/Engine/Pawn
- Go to inspect (dev tools). Enable device view.
- Select mobile device in drop down above page.
Expected result: Lines numbers match actual lines.
Actual result: lines not match to numbers.
Reason: Chrome bug: https://bugs.webkit.org/show_bug.cgi?id=84186
Solution:
#lines > * {
max-height: 1024px;
}