When I select triggers from the trigger list and then, I change to another page, selection from previous page is not cleared...

Steps to reproduce:

1.- Choose a host with many triggers (more than one page) and click on the trigger page.
2.- By default, first page is open. Select some triggers.
3.- Click on page 2 or 3...
4.- Select some other triggers and disable/delete them. Triggers from the first page are also affected and they shouldn't.

Maybe items/graphs lists are also affected.