When adding a record on almost all System windows the field Client appears empty, the record can still be saved, but seems wrong to not show the correct client.
Analysis:
This is a consequence of the ticket IDEMPIERE-2672, it seems there is a wrong configuration on dictionary, that was hidden because before that ticket the values out of the list were forced to be shown.
For example, the window Unit of Measure can be used in Client or System (AD_Table.AccessLevel = 6 SystemPlusClient) - but the AD_Client_ID field has a dynamic validation set that filters: AD_Client.AD_Client_ID <> 0
Found on core 358 columns with the problem: