Today I downloaded and compiled Lazarus and FPC Trunk via fpcupdeluxe.
Adjusting of Default editor font (in IDE Options > Editor > Display) doesn't work. When I click to "..." button, Font dialog window doesn't appear. And then I cannot close IDE Options window, OK or Cancel button, or X button don't work. I have to use Task Manager to close Lazarus.
Lazarus 2.1.0 r63658 FPC 3.3.1 x86_64-win64-win32/win64
This problem doesn't appear in Lazarus 2.0.10 + FPC 3.2.0