### Steps to reproduce

1. Login Begin of the insertionas instance administrator to the app

2. OpenEnd of the insertion Begin of the deletion and openEnd of the deletion a work package

Begin of the insertion3.End of the insertion Begin of the deletion 2.End of the deletion Click on a new comment (or edit the description field)

Begin of the insertion4.End of the insertion Begin of the deletion 3.End of the deletion Try mentioning a user with @ 


### What is the buggy behavior?

* All the users Begin of the insertionof the whole instanceEnd of the insertion are available Begin of the insertion(because you are global admin)End of the insertion


### What is the expected behavior?

1. Only the members Begin of the insertionof that project (and the work package shares)End of the insertion should be available


###

### Environment information

v.1.2.0-alpha (253)

**Operating System**

* [ ] Windows
* [ ] Mac OS X
* Begin of the insertion[x]End of the insertion Begin of the deletion [ ]End of the deletion Mobile iOS
* [x] Mobile Android
* [ ] Linux (please specify distro)
* [ ] Chrome OS
* [ ] Other (please specify)