We faced strange issue which reproduces only with one AD user.
This is task list frame (sorry for localization it is a screen from business user)

But it have to look like this

We have Hyperion Planning 11.1.2.4.004.
We can't reproduce error on test enviroment or other user.
We tried:
1. Creating user with similar rights (provision) - it works fine
2. Cleaning browsers cache
3. Using different browsers and workstantion
4. Deprovision/provision AD user
but this issue still occures...
Any ideas? what it could be?