Hi Petr, yes that's actually the designed behavior.
The reason why is that the browser may end up containing a large number of items in it. So the browser is set to have its own scroll bar separate from (or possibly in addition to) the scroll bar for the whole side pane.
If it did not do that, then when you had a large number of items in the browser, you would have to scroll the whole side pane to reach the stuff at the bottom of the browser, at which point the command buttons would be scrolled away and you would need to scroll back up again in order to launch any commands.
Because it has its own scroll bar, it makes it possible to have it work like this:
So notice there that the browser is populated with a large number of items. But the browser has a cutoff and gets its own scroll bar, so that it is possible to have the browser active and at the same time not have to scroll up or down to reach the regular command buttons such as Draw curve, etc...
But one thing also to note is that the "inside" browser mode is intended to be used with higher resolution screens where there would otherwise be a lot of empty space at the bottom area of the side pane. It is not intended to be used on lower resolution where there is not very much space at the bottom, it will probably seem weird in that situation because you'll get things like doubled scroll bars (an internal one for the browser and a full side pane one), but in that case it means that you don't have a good situation for using inside mode, use adjacent mode instead there.
If you do want to use the inside mode on a lower resolution screen, you may find it necessary to adjust the maximum height of the browser to be lower. By default it is clamped to take up a maximum of 40% of the height of the side pane. But if there is not much room left in there, that may be a bit too big. You can adjust that in moi.ini:
[UI]
InlineBrowserMaxPercentHeight=40
It looks like on your screen you will get some better behavior to help avoid the full side pane scroll bar if you reduce that to maybe something like 20 instead, that will help keep the max height of the browser limited to a smaller area. But it will likely become rather awkward to use a scene browser that is too small but with a lot of items in it, the adjacent mode is the one that is meant to be used if you don't have a pretty high vertical resolution.
Please let me know if any of that doesn't make sense.
- Michael