Application error when searching in singleton

When you run the Search menu item in any singleton tab, you receive the following error message:

  File "C:/msys64/home/ced/tryton-6.4-64/tryton/gui/window/view_form/view/", line 569, in focus_in
  File "C:/msys64/home/ced/tryton-6.4-64/tryton/gui/window/view_form/view/", line 395, in update

AttributeError: 'ScreenContainer' object has no attribute 'screen'

After this Desktop Client freezes completely. We have tested this in Tryton Client 6.4 and 5.4.
You’ll probably have to lock the Search menu item in the singleton tab or do nothing while it’s running.

Where is there a singleton showed in a list?

The singleton is shown in the form, not in the list. For example, these are the following tabs: Party Configuration, Account Configuration, etc.

You mean when you click on the menu item.

Please fill an issue.

Yes, sure.