My select field or layout setting is using the display text as value, instead of the defined value. Why?

Selectbox settings need field options to be defined as Displayed Text=value, which is subtly different from other instances where you can set options (such as Template Variables) in that it only has a single equals (=) sign. 

If your setting is configured with field options in the form of Displayed Text==Value, ContentBlocks doesn't recognise the value because of the two equals signs and it falls back to using your displayed text as value as well. If you configured it properly but it is still not saving the proper values, please let us know via [email protected].

Please note that the dropdown input type is different from the selectbox setting. For the dropdown input type you have additional ways to define the options as documented here.