How to reproduce

• go to the demo : https://demo.ametys.org/nightly-intranet-cms
• Create the following form:
• a first drop-down list with two meeting rooms
  
• A second list with sub-rooms
  
• a final drop-down list
  

• In the 'room A' field, place the following rule
  
• In the 'room b' field, place the following rule
  
• have a standard workflow
  

• Insert the form into a page and fill it out
• Go to the dashboard to modify your request :https://demo.ametys.org/nightly-intranet-cms/preview/intranet/fr/ressources/mes-formulaires.html
  

When the 'salle a' field is changed to 'b' or vice versa.
The rules do not apply.