home key does not work at any time in the file-manager

current situation: in the file-manager (is it for example Dolphin or PCManFM-Qt):
open a new directory, then press the home-key: nothing happens; the space-key need to pressed so that the first file is marked

possible solution: I don't know how to program software, but this is what I think:
at the moment there are only 3 values: current-item, onmouseover-item and selected-item, but a no-current-item does not exist; if a no-currennt-item would exist, and if it would be set to default, then when a new directory will be opened, the home-key should work right away (the space-key is then not more necessary)

where the home-key works at any time:
in Lubuntu 18.04 with the desktop-environment LXDE, in the file-manager PCManFM,
the home-key works at any time