jiribrada

I might have described the problem incorrectly. It is not that some sections are not shown; all of them are shown. The problem is that sections are shown in 3 columns with settings specifying 4 sections columns. However, it seems that there is space prepared for the 4th column, see the screenshot in my original post, it just stays blank and sections are not shown in this column. This is what happens if the number of sections columns in settings is 3:

This happens in both Chrome and Edge; I made sure the browser window is wide enough, not limiting the page width.