URL: http://mw.nikkei.com/sp/#!/article/DGXLASDG06H06_W5A500C1000000/
Browser / Version: Firefox Mobile 36.0
Operating System: Android
Problem type: Something else - I'll add details below

Steps to Reproduce

1. Navigate to: http://mw.nikkei.com/sp/#!/article/DGXLASDG06H06_W5A500C1000000/
2. Scroll down to the section "関連キーワードで検索" (related keyword search)
3. Click the blue button saying "水蒸気噴火"

Expected: site should launch a search for articles with this keyword
Actual: nothing happens.

The reason is that they depend on the non-standard innerText property:

searchKeyword:function(e){
    if (!e || !e.target || !e.target.innerText) return;

They could for example use

searchKeyword:function(e){
    if (!e || !e.target || !(e.target.innerText || e.target.textContent)) return;

both here and when they read the text to pass it to the search page.
country: jp