I created a document with the two first lines centered (headlines) and the next many lines of text. Selected all text> format > paragraph and choose 1.5 linespacing and clicked apply. Actual result: All text got centered with 1.5 in linespacing Expected result 1.5 in linespacing and nothing changed regarding alignment of text.
So, the idea is to only apply the changes done in the paragraph-dialog by the user and not just all settings. I am turning it into a wishlist-item then cause it's not really a logic bug but more a request to change how the dialog works today.
this works now (actually for some time already thanks to the late moji RIP)