Directional key symbols generated by xkb level 3 shift don't work in single-line text field

I assigned via xkb some level 3 shift key as: h -> left, j -> down, k -> up, l -> right. In dialogs where user is to enter some text in a single line text field, eg. "rename file" or "create new directory" dialog in KDE dolphin, or the filename field in "open file" dialog window, these direction keys doesn't work. Multi-line text fields and any other direction key operations work no problem. This only occurs after I switched to use xkb keymap to assign level 3 shift; before this I used xmodmap and this doesn't occur (but xmodmap is supposed to be obsolete and has its own problems).

How it occur with xkb:
In opensuse 12.1, file /usr/share/X11/xkb/symbols/us :

xkb_symbols "basic" {
...
  key <AC06> {	[	  h,	H,	Left	]	};
  key <AC07> {	[	  j,	J,	Down	]	};
  key <AC08> {	[	  k,	K,	Up	]	};
  key <AC09> {	[	  l,	L,	Right	]	};
...
  // <CAPS> as level 3 switch, see:
  // include "level3(caps_switch)"
  key <CAPS> {
    type[Group1]="ONE_LEVEL",
    symbols[Group1] = [ ISO_Level3_Shift ]
  };
  modifier_map Mod5   { ISO_Level3_Shift };
}

With xmodmap it worked no problem:

keysym h = h H Left
keysym j = j J Down
keysym k = k K Up
keysym l = l L Right
...
keysym Caps_Lock = Mode_switch
remove lock = Caps_Lock