Remove the text "Placeholder" from heightHelper BasicListItem
The text "Placeholder" is located underneath TableView's header and with LayoutMirroring.enabled set to true this text is aligned to the right; one can try to run for instance: LANGUAGE=he plasma-systemmonitor
Then resize the last column down if necessary to show the text "Placeholder". This text should not be showing up so it is replaced by an empty string.
Before and after: