Why do some buttons in calc (autosum, borders) not save last choice?

Good day!
Why do some buttons in calc (autosum, borders) not save last choice?
Though nearby there is button of background color of cell, which can save last choice.
It’s not convenient to choose the same thing every time.

My LO version: 6.3.5.2 (x64)


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Do you expect users (why try to help fellow users here on this site) to answer you why the program doesn’t allow some functionality that should be a feature request?

(And yes, choosing from a fixed small set of elements, like in autosum or borders, is different from >4 billion colors available for choice in color picker.)

Ok, i will create request.