Change between Question Type Boolean and Select errors

[DanielHabenicht]

1. https://covquestions.z16.web.core.windows.net/
2. Create a Question
3. Select Type "select"
4. Create an answer option
5. change back to boolean

é voila:

Hint:
The options attribute is not removed, thus the json validator says its invalid.

[DanielHabenicht]

this also happens for changes between numeric and text