I cannot reproduce the issue using your test survey.
How do you search for the first coordinates? What are the first coordinates?
Do you copy and paste them?
Can you maybe attach screenshots?

As I wrote before, when I choose for example Montpellier in the first map (South-East of France) the latitude and longitude are given in the data of the question. I take these data that I put in the second map characteristics (see the {str_replace(";"," ",localisation)} in default position, the latitude and longitude from the first map), normally I should get a zoomed map around Montpellier, but the map displayed is the one around Hamburg in Germany !!! That's the problem.

This problem appends only with Open Street Map. No problem with with Google Map. I just made some other tests,
If I click anywhere in the world I find myself always on the side of Hamburg in the second map

If you set manually position to same value : it work ?
Value are the same ?

@c_schmitz you can give it to me if needed

I don't understand why it work in gmap. It's surely gmap system about 'last position set in gmap'

OK, more a new feature : center part are not set to expression usage https://github.com/LimeSurvey/LimeSurvey/blob/b3991a41f32195a5b064690fa9d000700e1dc053/application/helpers/questionHelper.php#L491

(expression => '1' mean : allow usage of expression (if you add {), expression => '3' mean : forced usage of expressio (we add the { }). )

Visual difference are clear for 2, but don't find a way for 1 …
And here : it can be only 'static'

Patch https://github.com/LimeSurvey/LimeSurvey/pull/1039
@c_schmitz : i know "no new feature" in master currently, but … really little and great feature ;)

Fix committed to master branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=27017

Release 3.14.2+180807