Subtle toolbar repositioning bug

With xemacs-21.2.42 on Linux i686 2.4.0 XFree86-4.0.2 Via menu: Options -> Display -> Default Toolbar Location -> Right Now toolbar is at the right sider. Ok. Via menu: Options -> Display -> Default Toolbar Location -> Top Now toolbar is back again at the top, BUT not some buttons are redrawn incorrectly. See the screenshot below. Window System: Compiling in support for the X window system: - X Windows headers location: /usr/X11R6/include - X Windows libraries location: /usr/X11R6/lib - Handling WM_COMMAND properly. Using Lucid menubars. Using Lucid scrollbars. Using Motif dialog boxes. Using Motif native widgets. Images: Compiling in support for GIF images (builtin). Compiling in support for XPM images. Compiling in support for PNG images. Compiling in support for JPEG images. Compiling in support for TIFF images. Compiling in support for X-Face message headers. Nick.