Scrolling via mousewheel in the terminal scrolls by a lot on Windows (~12 lines)

[alexdima]

Testing #34868

Scrolling using the mouse wheel appears to scroll a constant number of lines, regardless of the terminal height, which can become very confusing:

emoji-test.txt

• save this file as UTF8 with bom (I think it is already)
• configure "terminal.integrated.scrollback": 5000
• run chcp 65001
• run cat emoji-test.txt

This is using all the defaults:

• the editor scrolls by ~5 lines
• native PowerShell scrolls by ~3 lines
• our integrated terminal scrolls by ~12 lines

For example, in this case, scrolling via mouse wheel once has jumped over "Venezuela", which is very confusing:

[Tyriar]

Might be related to #35191

[alexdima]

I was scrolling with an external mouse, not with the Surface Trackpad.

[jfftck]

I am also seeing this issue and when the terminal is only 8 lines tall it skips large sections. This causes me to not know where I am in the output.

Could smooth scrolling be added as a setting to give a temporary fix for this issue? At least I would be able to see the lines as they scroll by.

[Tyriar]

I believe this is fixed in the latest version of Insiders, it now correctly scrolls depending on the mouse's configuration by the pixel/line/page amount.