Hey, Oguz!
just run into issue.
I am using Custom Sidebars to serve different second navigation on different archive & post pages.
(Maybe) with 4.9.1, after 20 second navigations already done, the new ones stop appears on archive (category) pages, when and only when I asign to the same sidebar (i.e, custom menu default wordpress widget) visibility for post pages. If I reduce visibility to category page, all good.
There is a workaround, however. I need to create 2 different widgets and asign their visibility to articles for the first and to category (menu) for the second. So, for the same purpose, now I have to create 2 sidebars,
as visibility for Taxonomy (category) and Filters (posttype) is not working anymore in the same time, in the same widget.