Tabs Sidebar automatically scrolls to have the focused tab at the bottom

[rychphd]

When the tabs list is long and doesn't fit in the window height, after using the scrollbar to bring lower tabs into view, the following behavior is observed:

every time I focus a tab, the sidebar slides by itself down to align the newly focused tab at the very bottom, which is undesired -- I don't want any automatic scrolling of the sidebar, please.

Add-on version: 0.13.1
Firefox version: 102.0.1 (64-bit)
OS + OS-Version: Linux
Other tab + user interface related add-ons: Foxy Gestures, ScrollAnywhere, ...

Tried Sidebery: no auto-scrolling of Sidebar on any tabs clicked in the list

[rychphd]

looking for a possible setting that causes this, I have in my userChrome.css #TabsToolbar { visibility: collapse !important; } Removing it doesn't fix the problem, only the horizontal native tabs toolbar is displayed, along with the VTR. Clicking on tabs at the top doesn't scroll the top bar. Clicking on a bar in the VTR scrolls the whole list to bring the tab into "the view", which for some reason is to make it the last one at the bottom.

[hurzl]

It's a bug, not a feature (enhancement etc.), right?