### **Environment**:

Your OpenProject Version: community / Cloud Edition

Operating System / Browser / OpenProject language: Android / Firefox / German

### **Steps to reproduce:**

1. Go to community.openproject.com Begin of the insertionon a mobile screen sizeEnd of the insertion Begin of the deletion as anonymous userEnd of the deletion
2. Navigate to a project, open the Begin of the deletion work packages module
3. Via the settings menu, activate theEnd of the deletion Gantt Begin of the insertionmoduleEnd of the insertion Begin of the deletion chartEnd of the deletion

### **Actual Behavior**

Begin of the insertion* TheEnd of the insertion Begin of the deletion No changes, theEnd of the deletion Gantt chart is not visible, not even in landscape format (phone rotated by 90°). Begin of the insertion
* End of the insertion When I change to "desktop mode" in the browser I can see the Gantt chart like on a desktop computer.

### **Expected Behavior**

Begin of the insertion* End of the insertion There's a message telling me that/why it can't be accessed on a phone this way. Begin of the insertion
* The same messageEnd of the insertion Begin of the deletion

Or the whole tabEnd of the deletion is Begin of the insertionshown in all modules that does not make too much sense on mobile:
* Gantt
* Team planner
* Boards(?)
* Calendar(?)
* **Visuals: TBD**End of the insertion Begin of the deletion hidden.End of the deletion