i could not make the translator do french - german

What is "the translator"? Is this about ContentTranslation ? If so, please feel free to add that project tag to this task so developers could find it. Thanks!

Ah. Excuse my last comment, I misread!

when saving i must have made an error and the translation was gone.

What was the exact error message? What happened (or not)?

i cannot recall the exact message, and i would appreciate to concentrate on the root cause: somebody doing new pages control feels that it is necessary to move an article into the users namespace because the person thinks the article is not good enough. such a move should never be necessary or permitted. if not good enough not flag it. if not flagged for long enough (a week or so) just delete it.

"new pages control feeds" and "flagged revisions" are not part of MediaWiki core. So the root problem seems to be about you editing a page (without saving changes), then someone else moves that page, and when you finished editing that page and saving the changes there is some (unclear) problem / error?
What would you expect exactly to happen?

In T171902#3483466, @ThurnerRupert wrote:

somebody doing new pages control feels that it is necessary to move an article into the users namespace because the person thinks the article is not good enough. such a move should never be necessary or permitted. if not good enough not flag it. if not flagged for long enough (a week or so) just delete it.

That sounds like a social agreement of the community on that site, not like a technical issue at all to me.

hahah, andre, i find it now painful in phabricator that it seems to be impossible to create a ticket towards better control of new pages :) what i want is clear: give a new page time to ripe. and for this, give the persons checking new pages technical means to do this appropriate. as you are experienced with all software components could you list the components involved and their purpose, so we could make tichets which can be implemented? mabe flag pages, or not. maybe display edits after X hours? maybe a flag "not done" or "help wanted" when storing? not sure what means were discussed up to now ...

@ThurnerRupert: Yeah, very valid point, it's not easy at all to understand what's [potentially] doing what, same problem here sometimes. :-/

I'm going to add English-Wikipedia-New-Pages-Patrol as they might have some input / opinions / expertise too.

This feels like a site request (for frwiki to enable FlaggedRevs) rather than something with any of the current tags. Any change of this magnitude would need a major community consensus with a deployment, statistics and analysis plan, which doesn't seem likely?