Rudder

So, I have a technique starting by an upper case. It's id also has an upper case (should not ?).
If I clone it, change first letter to lower case, try to save, I have an error which is totally not actionnable and should be change (something like "an error occured server side, try latter").
Then, in logs I get:

[2021-10-15 10:06:49+0000] ERROR com.normation.rudder.rest.RestUtils - "Could not create ncf technique <- Technique name and ID must be unique. 'technique with blocks' already used" 

As I'm still on the technique, I try to delete it.
There, I get a screen with 0 techniques remaining (I had only the other one, so perhaps it removed both based on the id, case insensitive?).
A bit of stress, then I click back on "techniques" in the main menu, and I get not only two techniques... But also two drafts ???

And yes, in the file system, contrary to what rudder and log told, there is a bunch of technique:

• id must be case insensitive
• error must be actionnable. What fail? How can I fix it?
• if log say it was an error, there should not be files in the fs
• draft must be deleted once technique is saved without error (what happened for the first one). I don't want draft for saved techniques.