The active page should be unchanged when removing an active first page
from a property sheets.

dlls/comctl32/propsheet.c

diff --git a/dlls/comctl32/propsheet.c b/dlls/comctl32/propsheet.c
index 6dd2250..efbd066 100644
--- a/dlls/comctl32/propsheet.c
+++ b/dlls/comctl32/propsheet.c
@@ -1734,6 +1734,7 @@
       {
         /* activate the next page */
         PROPSHEET_ShowPage(hwndDlg, index + 1, psInfo);
+        psInfo->active_page = index;
       }
     }
     else