Redmine

hello,

my idea is, i have two upload buttons for attachement to upload the attachement on different servers. so my problem is if i click on the bottom upload button he will move in the wrong fieldset.
the button.jpeg show the start situation
the button_wrong.jpeg show the situation after i add a attchement in the dateiupload sharepoint server fieldset.

why is this attachement desxription and the upload button moving automatically to the dateien fieldset?

my env:
Environment:
Redmine version 3.1.1.stable
Ruby version 2.1.4-p265 (2014-10-27) [x86_64-linux]
Rails version 4.2.4
Environment production
Database adapter Mysql2
SCM:
Subversion 1.8.8
Git 1.9.1
Filesystem
Redmine plugins:
easy_baseline 2014
easy_gantt 2016.01.1000
easy_gantt_pro 2016-RC1.0
file_servers 3.0.2
redmine_issue_templates 0.1.1
redmine_percent_done 1.0.0
redmine_tags 2.0.1-dev