Redisplay problems with the NEW_GC algorithms

I am running Gnus (from CVS) with native win32 21.5b26 XEmacs. I turned USE_KKCC and NEW_GC on. I have strange redisplay problems. Gnus by itself seems to run ok, but : - when I switch from the Article buffer (configuration with 4 windows in the frame) to the Group buffer (only one window in the frame), the scrollbars do not disappear. I have been able to reproduce this by : * visiting a file * splitting it both horizontally and vertically (3 windows in the frame) * M-x delete-other-windows It happens randomly, but scrollbars do not always disappear. - the minibuffer is sometimes 2 lines high and in fact the main window seems to be shifted up. Anybody can reproduce this ? Or is it only me ? I have recompiled with USE_KKCC=0 and NEW_GC=0 and up to now, I don't see the same effects. Regards, -- Fabrice Popineau ------------------------ e-mail: Fabrice.Popineau(a)supelec.fr | The difference between theory voice-mail: +33 (0) 387764715 | and practice, is that surface-mail: Supelec, 2 rue E. Belin, | theoretically, F-57070 Metz | there is no difference !