activeicon is ignored in AJAX queries

Setup

• MW version: 1.29.1
• DB (MySQL etc.): 5.5.57
• PHP version: 5.6.31-1~dotdeb+7.1
• Maps version: 4.2.1 and 4.4.0
• SMW version (if applicable): 2.5.4

Issue

I have a query like this:

{{#ask: [[Adresse:+]]
|?Coordonnées
|format=leaflet
|width=300px
|hidenamespace=yes
|icon=/assets/oval-15.png
|activeicon=/assets/pin.png
|enablefullscreen=yes
|limit=2000
|ajaxcoordproperty = Coordonnées
|ajaxquery = [[Adresse:+]]
|zoom=17
}}

On initial display, the current page is correctly represented by the icon set in activeicon:

But if I move the map, all markers are replaced by the result of the AJAX query and the current page marker is replaced by the regular icon: