On installation of 5.4.1.2 (x64) Build ID: 
a7cb86e6eeb2bf3a5af73a8f7777ac570321527 on Win 7 Professional 64 bit

there are no separate entries in the Windows Start menu for the individual components of LO, even when they have been used, and consequently there are no associated pick lists of files from the Windows Start menu, features that were available under my previous 5.2 install.  This slows down access - instead of e.g. being able to select Calc in the WS menu to load a new spreadsheet, or to directly select a file from the WS pick list to be opened, the LO start centre must first be opened, and then a new file or recently opened one.  The WS menu provided separate lists by application module, which is a convenience when using one module much of the time, with many files, and you need to open a file from a less used component.

Also, when closing a file that is the only one remaining open in a module, instead of displaying that module and giving the opportunity to open a different file within it, the fallback is to the LO Start Centre - a new behaviour that is confusing.

I did not detect any option in the install process that might affect this new behaviour.  

I noted that the LO Start Centre Recent Files menu only offered "Clear Documents" as an option, despite displaying thumbnails of files in the main pane.  It is failing to link to the recent files list, which does at least appear as a drop down menu within individual LO components.