It seems there is some issue with all elogs made before the server change. They are looking weird. For instance https://gw-elog.mtk.nao.ac.jp/osl/index.php?r=3342

Due to this issue, sometimes the search filter fails, because it is unable to find the word(since it looks strange). The issue happens only if I search and go to the elog. Perhaps not if I go directly without searching through keyword option.