@sTix
Oh cool! Tested! Scrollbars work for sure but probably have some moments (if I got it right).
To reproduce what I mean :
1). open any text. All fine, scrollbar here, works.
2). open a new tab and open any text in it.
Now, it is expected IMHO, that scrollbar will be only one visibly for the only the active tab. But instead, we have 2 scrollbars, for each tab, even if active only one.
Even if you drag the scrollbar of the invisible tab, it then jumps back to the original position once you switch to the previously inactive tab.
In other words, IMHO, the only scrollbar of the active tab should be visibly, not all of them. See what I mean (press open in new tab for full-size):
PS. Native MUI tabs will be very cool as well :)