FOTT bug report: Multiple scroll bars for model compose popup with lots of models. Can't close without scrolling down

**Describe the bug**
Multiple scroll bars for model compose popup with lots of models. Can't close without scrolling down

**Screenshots**
![model_compose_popup](https://user-images.githubusercontent.com/60452964/85808165-e5b9c580-b708-11ea-8a46-b7734095b6bc.png)

