Searching in themes or addons gives you suggestions about existing packages matching terms you searched. But if you already searched for something, chrome (chromium in my case) tries to suggest auto completion for that form and that is overlapping elk's suggestions.
Sometimes the image is worth 1000's words, here is one (top right corner - search):
(https://www.elkarte.net/community/index.php?action=dlattach;sa=tmpattach;attach=post_tmp_145_d04333fb6e30d236043ccfc95eeecb04;topic=0)
By the way, someone should test these on other browsers.
Should be fixed now
Yep, fixed.