Ctrl+F results not located?

[cangyuyao]

When use ctrl+f to search a keyword on a webpage, normally the browser automatically jumps to the results one by one.
Now I have two columns on the page with different heights and apply this kit on both columns. The script functions well. Then I search a keyword, and the results in the longer column are located correctly but those in the shorter column not. The browser still highlights the word but doesn't scroll to it.
Is there anyway to fix this?