My island appears to be under water

I wanted to create an islet into a lake, but, after adding to my islet its name, place and relation to the multipolygone as “inner” (“outer” for the lake), and after waiting enough time to regenerate the map, it displays my islet like it was under the water. I’ve put (I think) the exact same parameters than another island somewhere else that appears correctly.
What did I do wrong ?

The link to my islet :

Thanks for your help !

Mayby this change helped:

Yes apparently it’s ok, the islands already appears with lower zoom!
Is it ok to let the lake as “draft” ?
Thanks for your help.

I have just removed those tags which are on the multipolygon. The tag note=draft was added 2007, several nodes where added since then, so I think you can remove it.