Dropdown display value after manual client refresh

How come the reference selector dropdown fields display blanks unless the client is manually refreshed? The values are stored and can only be viewed once refreshed. I also cannot save the form before refreshing manually because the dropdowns are empty and it displays 'invalid input' underneath the affected fields/dropdowns. All those dropdowns are simple references and quite strangly not all references are affected but only 4.
1 answers

Are you sure it's not a problem with your data, like here.