Version: (using Devel) Installed from: Compiled sources one from the "why do you care?" department. :D there seem to be some stray pixels below the actual menu bar contents, which makes it waste space and look vertically asymmetric. it seems to be fairly independent from the gui style. maybe some bad interaction with the activity indicator?
See thread "Konqueror throbber size" on kfm-devel... 1) QtSw task 200799 would help 2) the other part of the issue is that we have to pick an icon size for which we have icons.... so even if qmenubar gave me the exact height it allows me to use, an icon size of 18x18 or 19x19 leads to ugly scaling. No idea what the right solution is. Right now we round to the nearest known icon size, and that's what makes the menubar too high.
*** This bug has been marked as a duplicate of bug 166593 ***