Manual QA testing of Phoenix

[LukasHirt]

Description

We are coming closer to the first milestone so we are in need to do some manual testing to catch as much 🐛 possible. Try to do overall testing pls and try to break it 😁

[DeepDiver1975]

Some IE11 and FireFox testing would be great - also some mobile testing might be reasonable.

[pmaier1]

• See my findings here Collaborators tweaks after review #1186 (comment)
• We need to gather our findings and make sure that the learnings go back into the requirements/product doc and low-level feature files where applicable.

[LukasHirt]

@individual-it Do you still plan to work on this? Can we close this and focus on fixing found bugs?

[individual-it]

I think we have tested the current state well enough. Lets focus on fixes and automated tests