[SOLVED] categories showing in menu
 

I thought this may help some people that upgrade to 3.7.18

Even with the fix from juggledad regarding the functions file, eg changes to line 925
if (is_single()) {

I still had the issue of categories showing on my menu 2. Having saved the various page settings, eg content, header and footer they were still showing.

However i noticed when I went into the Menu's option, under Theme locations, my 2nd menu was not ticked:
Theme location> Menu 2

ticking this, solved the issue and my menu returned to normal.

thought this would help people, who had tried the replacement function code and still had the issue.