Why is the search box text like this

[JCL206312]

[nightwing]

Looks like you are using ace.js and ext-searchbox.js from different versions of the library. Unfortunately config.nls method have been changed in backwards incompatible way.

[JCL206312]

I used version 1.35.4 before, but after changing it to version 1.31.2, I got it right. Why is there no problem using the new version for the official website example

[nightwing]

the important thing is to use all the files like ace.js and ext-searchbox.js from the same version. If some of your files are from 1.35.4 and some from 1.31.2 there will be a conflict, but with matching files it will work.