Switching Keys

For 2.0 it is very helpful to show naturals with key signatures - if the key changes in the middle of a piece to show less accidentals.
There is a helpful choice in the setup to make this naturals visible or not.
But
in these cases the naturals appear on all key signatures of the following lines - this is n o t useful.
I think naturals after switching keys should only appear the first time, immediately after the change and only 1 time (excepted as courtesy key signatures).