When changing tabs using Ctrl-PgUp and Ctrl-PgDn, whatever object was focused on to begin with in the original tab loses focus when switching back. For example, if posting something on a message board, and switching tabs to look up some additional information, when switching back to the message board tab, the cursor will no longer be in the same place. This can be easily reproduced in bugzilla. Open two tabs, one with a new bug report, and the other can be anything. Start typing in the description field, and then use Ctrl-PgDn to change to the empty tab...then, use Ctrl-PgDn to change back to the bugzilla tab...the cursor will no longer be in the description field. It would be very helpful to have the focus be remembered, so that when you come back to each tab, you would be where you left off...in this example, when you switch back to the bugzilla tab, the cursor should still be exactly where you left it, in the description field.
Duplicate of "Tabs don't remember which element was focused when switching tabs" *** This bug has been marked as a duplicate of 120148 ***