styles and formatting

Good evening
The other day I bought a new computer running Windows 8.1 and installed
LibreOffice 4.4.2.2
I BELIEVE it did work as usual.
Today I started a new job/document and wanted to apply my custom style.

However, the "style and formatting" menu DOES NOT appear any more.
Neither F11, clicking on "Format > style and formatting" nor clicking
the little icon at the left top of the page works.
(customize -> reset F11 did not help either)

What has happened here and is there a way to get the menu back?
Thank you.
Thomas

See the release notes for version 4.4, https://wiki.documentfoundation.org/ReleaseNotes/4.4#Sidebar_changes :
'Also, the Sidebar now combines the functionalities of the old "Gallery" and "Styles & Formatting" floating panels, removing a lot of UI redundancy.'

Click on the Styles and Formatting button in the sidebar (at the right of the window) or on the menu button at the top of the sidebar menu and select Styles and Formatting.

I trust this helps.

Brian Barker

Thank you.
After playing around with it a bit I found, that if you "undock" that thing,
F11 will display the menu again.

Quite a difficult birth.
Thomas