User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Firefox/31.0 Build ID: 20150331220615 Steps to reproduce: We have over 360 filters. Without going into why, we frequently need to select the entire list of filters in the Message filters dialog. This is done by clicking the first filter in the list to highlight it, scrolling to the bottom of the list, then shift+clicking the last filter in the list to highlight the entire list. Actual results: Gaps appear in the selection - groups of one or more filters scattered throughout the list are mysteriously not selected. We must scroll through the list and ctrl+click the skipped filters to add them to the selection Expected results: All filters, in between an including the first and last filter in the list, should have been selected after the click - scroll - shift+click sequence.
Are you sure the filters in the middle are not selected and you really have to additionally select them? Or are they selected, just do not appears selected in the display? What happens if you do not select them and run the operation you wish? I think those "unselected" filters will be included too. Anyway, I can see the visual problem. But I think we have it already reported somewhere.
Yes, I am certain that they are not selected. We are using a plugin (https://addons.mozilla.org/en-us/thunderbird/addon/quickfilters/) which allows sorting of selected filters in alphabetical order. The filters which fail to get selected do not get sorted - this has been tested. The additional step of shift+click of the unselected filters must be performed in order for them to be sorted. So this is not just a display/visual issue, it is in fact an actual condition.
OK, then I think it should be a bug in the widget itself.
So what would the resolution be?