Hardware Identification contain a nested listbox
The Hardware identification row contains a nested listbox (listbox inside a lisboxrow inside a listbox). This is not supported and breaks styling among other aspects of the listbox. The AdwExpanderRow should contain exclusively GtkListBoxRows or AdwActionRows.
Compare the style (darker background, and the 1-2 pixels of a lighter border) of the row with the one from the row bellow it.