It seems there is a text string missing (and one is a duplicate). See attachments please. First column should be "file name" or such?!?
Is:
$txt['show_attach_downloads'] = 'Downloads';
...used for both columns?
A bug for sure !
/me blames copy&paste. O:-)
Fixed here: https://github.com/Spuds/Elkarte/commit/0be20fbead426d40501e3c28f85288bef7dea04f