[Bug]: Data in previous step lost

[Prnyself]

What happened?

1. Click Create Task button
2. Fill in infos in dialog at step1
3. Click Next Step button
4. Click Previous Step button or specifc step in the list
5. The info I just filled in is lost

I think it is expected that the info I just filled in should be recorded so that I can check them again or modify them.

Version

0.2.0

What browsers are you seeing the problem on?

Firefox

Relevant log output

No response