I am using the SaaS version of Camunda, and the DMN literal decision FEEL editor has been updated now to provide auto-completion of FEEL expressions.
However, anything that is entered into the editor is no longer saved. Reproduction steps as follows:
1/ Create a literal decision type:
2/ Open it up and enter in an expression:
3/ If I try and deploy it I get the following error, so it thinks the FEEL expression editor content is empty:
4/ If I go back to the DRD and back into the decision again, the FEEL expression is not there (but the variable name and type is):