The performance: When I have opened a file named after bxxxx, I use goto anything to search a file after bxxxx again. Immediately the letter b is inputed, the search box will exit.The cursor will be in the first cell of the first line within current file.

First ,the problem occurred when I used a installed version(x64).So I uninstalled it and choose a portable version(x86), but it occurred again and confuses me so much.