We have a section A which referred another section B. For section B, page context is to use data page (and passing parameters) and in Section B we have repeating grids which uses page lists of data page. Data page is Thread scope and not checked for load on every interaction and no refresh criteria. 

All this setup is working fine and filters in grid working. But after keeping the UI open idle for some time (like 10 mins), then click on the filter of the grid, its showing values. When check data page on the clipboard, it has error. With out clicking on the grid after idle, if refresh and see the thread clipboard, data page is lost.