I cant replicate this.

On 26 July 2015 at 14:34, axel-rank notifications@github.com wrote:

Steps to reproduce the issue

In media manager the delete button doesn't do anything onclick --> no
function anymore.
Can't delete files or folders!
Expected result

delete files/folders
Actual result

no result
System information (as much as possible)

Joomla 3.4.3, PHP 5.6.11, Apache 2.2.29
Additional comments

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#7544.

Brian Teeman
Co-founder Joomla! and OpenSourceMatters Inc.
http://brian.teeman.net/

Known issue that will be fixed with 3.4.4: https://docs.joomla.org/J3.x:Delete_button_on_the_media_manager_does_not_work_anymore

Closing as allready fixed Thanks @axel-rank