I use Doit.im 4.4.3 on Android. Recently I've noticed that it is not possible to create new tag.

How to reproduce:
1. Tap on any task to enter it
2. Tap on 'Edit more'
3. Tap on 'Tags' to reveal a tag list
4. Select any of existing tags or 'Unset' option, see it working.
5. Tap on 'New tag' field, enter some text there, tap 'OK'. No tag is created, 'Tags' field is left blank.

Expected:
Step 5 should create new tag and assign it to the task.