As discussed here https://community.thinkwisesoftware.com/ideas-18/filter-in-treeviews-without-losing-parent-nodes-279 it would be very handy that parent nodes stay in the treeview when filtering. I've had numerous occasions that I filter and lose all parent nodes and giving me no information about the parent or the parent of the parent.
So I would like to see the parent nodes of entries whenever I filter in the way how Arjan described:
I usually solve this by using a hidden column, which contains the filter value of the parent node.
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