I have a select in my app that have a default value : {{scaninventory.data.LocationID[0]}} (null until a user enter a value)
Not sure when It broke but before we where seing the Label and not the ID.
Now It shows the ID instead of the label.
If I select the ID 32 in the dropdown it shows the label, but if I use the default value to input the 32 it doesn't show the label associated.
Using the ternary {{ scaninventory.data.LocationID[0] == undefined ? '' : String(scaninventory.data.LocationID[0]) }} should work. You can change it to display some other text besides an empty string, like 'Nothing selected'.