Bug when entering sub tasks

I LOVE this app, but one small bug that is really annoying.
When I click on a sub task and try to type something, the words disappear for some reason. I can only see it after hitting enter, and it’s really difficult to enter a sub task and very very annoying.
Could you please fix this ASAP!
Other than this, this is a really great app.

Mary M Japan about Wunderlist: To-Do List & Tasks, v3.4.5