Child updates are not taken into account when parent changes

[gaearon]

1. Change B
2. Change A

Expected: changes made to B in step 1 are preserved.
Actual: B is unmounted, changes are reset.

[gaearon]

Can't reproduce this in master. Must be a local bug.

[luigy]

I ran into this earlier today, but then the final of the world cup started 😂

the bug is still there with master

[gaearon]

@luigy The label on the screenshot doesn't match current version. You have an outdated version.

[luigy]

Yes, that was with the old version, but same steps also reproduce this in master
https://i.cloudup.com/0OYErnjZHN.mp4

[gaearon]

This looks like a different issue than what I described.
I'll try to reproduce this today.