[Lazarus] Settings in the options dialog are not focusable via keyboard

[Lubos Pintes]

Hello,
When I open the options dialog by pressing Ctrl+Shift+O, choose a 
category in the tree and try to navigate using Tab, I can tab through 
the category tree, three buttons and the filter edit. The settings 
themselves are not reachable. Is this a bug?
I am using Windows 10 and the fresh Lazarus from SVN built today.
Thanks