Revert "fix undefined variables"

This reverts commit 77a53809.

Revert "Listbox: calculate a mapping uid -> object once"

This reverts commit 84029c01.

Revert "fix list method returning duplicate uids"

This reverts commit 386b0e6b.

Revert "test for dialog listbox with editable fields"

This reverts commit e046d8f5.