🐛 Bug Report: After setting a topic of a message broker within a service to receive or send you cant set other topics that belong to the same message broker


**Steps:**
1. Create a project with a few services
2. Create a message broker
3. Create 3 topics within the message broker
4. Go to one of the services and activate the message broker
5. Set the **first** topic to 'send' or 'receive'
6. Try to set the **second** topic to 'send' or 'receive'

**Expected:**
You can set the **second** topic to 'send' or 'receive'
More in general - you can set any topic to any value you want 'none', 'send' or 'receive'

**Actual:**
You can't change the **second** topic from 'None'.
A user also reported the screen going blank when you try to set the additional topic

**Note** - I am able to change the third topic to 'send' or 'receive'
**Note** - After I change the first topic to something else I am able to start changing all the topics. (also after changing the third topic it unlocks the second topic)
**Note** - Sometimes you make a selection and it reverts to the previous selection and you need to repeat the selection (**This should also be fixed**)