Transfer() may prevent wallet to interact with non updated fallbacks after the Istantbul fork

[i-stam]

Regular call() should be used instead, Check also https://diligence.consensys.net/blog/2019/09/stop-using-soliditys-transfer-now/ .

There should be carefully examined it there are bugs introduced by re-entrancy. It should be possibly combined with restricting owner to EOAs (check #570)

[i-stam]

This is fixed in v4. We have circumvented this issue by using executeTransaction() in the backend.

[mischat]

@nostdm i think you should go in and understand this stuff too ...

[mischat]

@mischat can you look at this too