I would like to edit "xc-search-result-list-row.tpl.php" on "Display templates" in Drupal Administration Page, but I couldn't find it.
I think it should be there.
It seems something like a bug in "Display templates".

By the way, I found a missing description of t-function at line 36 "abstract" in "xc-search-result-list-row.tpl.php".
I added "t function",then it works fine.

The code:
xc-search-result-list-row.tpl.php
line:36

before
abstract :

after
print t('abstract') ;: