The problem: Neither multi selenction nor shortcuts such as Shift+Click, Cmd+Click work while the list elements filtered.
Use case: In this example i as a Designer have an imported sketch fiile, i wanted to migrate to XD (good luck with that), and need to select all the redundant elements in the list with the names Cut 1, Cut 2 ... across different groups. I open the layer list and filter for "cut", get the list of more than a 3000 of them and unable to multiselect. I can only select / delete them one at a time. Filtering the list of layers does not suppose to break the multiselect functionality.
This means that the above feature is not complete yet.