Is there a way remap scrolling through N-panel? I’d like to set it with scroll wheel only. Before 3.6 we could scroll through the addon list just with the wheel. Since 3.6 and now in 4+ we have to hold ctrl for that.
I use 3.6.5 and scroll through it with just scroll, no Ctrl. You’ve changed something about the default settings
Yeah that are two decoupled things now if you scroll tab row or if you change the active tab with it. In older versions the tabs did shrink to fit on screen. Its possible to set the shortcut for the properties panel, but it looks like for the n-panel its still hardcoded (at least I cant find it).
Note: The shortcuts for the tab scrolling are in View2D Button List (Scroll down and Scroll up)
It’s still the same as previous versions, where to Grow or Shrink, it is Scroll-Click + Ctrl and drag ( same as all windows)…
It has changed in 4.xx, now it is Scroll over the N-Panel tab and move up or down, and add Ctrl + Scroll to Tab through the Tabs
Are you talking of the tab headers(text) or the whole panels?
The whole panel…
You used to be able to also enlarge things like the color picker, but now that doesn’t work…
If you have one of the Tabs OPEN, then holding over the TABS it will scroll through all of them in their open state…but now you have to use Ctrl + Scroll…
( sorry I’m testing all the old functions as I type…)
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Yeah no I think he means just the headers
It was like that:
And thats what you scroll now with mouse wheel only instead and ctrl wheel changes the active tab
Took me a while to get you are still posting into your old post. 
Yeah. Thats the thing. Its now Ctrl+Scrollwheel. But I cant find that specific shortcut, maybe its really still hardcoded.
Im away for a couple hours now. Perhaps you can find it. I’ll have another look later.
Sorry, I guess I wasn’t clear enough. I was referring to scrolling that changes the active tab. That’s how it used to be. Now it just scrolls through unless I press ctrl 
Well I think I wasnt clear enough aswell. 
I got it like that and tried to describe what you can currently change and what not.
But I also reacted to RSEhlers comments, thats why it turned out a little confusing.
So, you want to change the shortcut from Ctrl+Mousewheel to just Mousewheel so that spinning the wheel on top of the n panels vertical tab list it not just scrolls that tabheaders up and down, but also changes the active element.
For that you have to identify if and where all relating stuff is set up in the keymap and change it to your needs.
The operator that scrolls is “view2d.scroll_down” and “view2d.scroll_up”. But its parameters are just a custom deltax and delta y or pagewise scrolling. No param for changing the active tab with that command aswell.
The next thing to find would be to find the operator assigned to ctrl+mousewheel, and the sad news is, there is no other fitting keycommand listed in the keymap. What brings me to the conclusion that its not yet made customizable. Thats sometimes the case. Then its hardcoded and you are out of luck. Thats how it looks. They typically try to eliminate hardcoded controls though, so maybe a future version will have it included in the keymap.
Have a look yourself, what you can change is listed here:
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