Bug #88742 was fixed at https://cgit.freedesktop.org/libreoffice/core/commit/?id=772686adb99137733db79b7d1ab6ebb21bf93b4a
Now we need to update the helpcontent to reflect this change:
Also it's no longer a window but a sidebar, so that needs to be changed as well.
Olivier Hallot committed a patch related to this issue.
It has been pushed to "master":
tdf#111651 'Styles and Formatting' -> 'Styles'