In LO 4.4.0, the Style dropdown's new split menu can't be dismissed by clicking on another style. This report is extremely trivial and nitpicky but might indicate a lack of polish. I'll mark this as an enhancement request.
Steps to reproduce:
1. Start new document
2. Click Style Dropdown
3. Click on one of the arrows on the right side of a style to open split menu
4. Try to select another style
You should be able to click another style to dismiss the split menu. Note that this should not actually select the style you clicked on, but should just dismiss the split menu.
Your click is ignored.
Note that you can achieve the desired effect by just clicking on the arrow again to dismiss the menu. You can also click anywhere else on the screen to dismiss the split menu and roll up the drop down.
Again, sorry for even bothering to report something so trivial. There are many more important bugs out there! I tested this using LO 18.104.22.168 rc1 on 32bit Fedora17.
Win 7 64-bit Version: 22.214.171.124.alpha0+
Build ID: b3b4bbaf6cbd2226b659fea7d6ae473ccf84e9dd
TinderBox: Win-x86@39, Branch:master, Time: 2015-01-12_06:13:44