Varchar value changes to "Non-Decrypted-Password" when saving device form


When saving a device (joincomputer) we have a varchar field which changes to "non decrypted password" after inputting a new value and saving. Checked the dbdicts and data encrypted is not checked off, do not see anything in the SL or DS which may cause this. I would like to avoid using a new field. So far i've only been able to reproduce it on the Web client. Are there any places I can check device 'update' or the field itself regarding this behaviour?