Horizontal scrolling does not work as expected, limitation not clear in documentation

Resurface of 2y old bug report that got closed as upstream, slightly reworded/improved

Describe the bug
Even though warp is disabled (toggled by Alt-z), zh/zl/zH/zL are not working properly.

Expected behavior
zh: scrolls one character, cursor does not move in document etc.

Actual behavior
zh: move cursor to the right character, the same as l
zl: move cursor to the left character, the same as h
zH: move cursor +60 char if >60char left, otherwise beginning of next line
zL: moves cursor +60 char if >60char left, otherwise end of previous line

In https://github.com/VSCodeVim/Vim/blob/master/ROADMAP.md#scrolling it's stated that zH etc work with customisation, but in fact, it's not clear that it's a very dirty workaround.

Possible solutions

1. Make it clear in the roadmap/docs, that scrolling is not properly implemented. Everyone can move cursors, that's not the same as scrolling.
2. Stop cursor from switching lines, this is very much not what one would expect at all, it makes no sense.
3. Find a better workaround: maybe moving 120 char right, then 120 char left as opposed to just 60 right? That way one scrolls without having the cursor change place.
4. Convince upstream to make proper scrolling available through the API and implement the feature as in original vim.

Start with ROADMAP.md#scrolling and the linked historical issue, then reproduce zh/zl/zH/zL with warp disabled in the current extension. Clarify whether the accepted scope is documentation or behavior, and consider the work done only when the limitation or corrected scrolling behavior is verified and documented.