Changes to CDT are discarded upon saving the CDT when CDT contains field of type Document

Question

Hi all, I have a strange issue where the changes I make to a CDT that has a field of type Document, are not saved when I click Save 
 Upon clicking Save, the ID is no longer the Primary Key and the length of the text field disappears (after I have set the primary key and the field length). 
 I have also tried to import from an XSD where the fields are defined correctly, but after import, the changes are gone again. 
 I only have this issue when the CDT has a field of type Document in it. 
 Can anyone explain to me why this is happening, and provide a possible solution? 
 The only solution I can think of is to change the type from Document to Number (Integer) and just save the document ID in the field. 
 When I remove the field of type Document, it works fine and the changes are kept and saved.

Thank you, 
 Morn&eacute;

Colton Walker · Accepted Answer

Morné, 
 
Thank you for reporting this bug! We are currently working on a fix. I'll report back in when we release a hotfix for this issue. 
 
Best, 
Colton

Morné Lombard · Answer

Apologies, I see now that we are on Appian's Home Release, so our environment is on 18.4 and not 18.2, so this might actually be a bug that still needs to be fixed before the update becomes publicly available. We usually have bugs being on the Home Release.