Custom entity lookup icon problem in service hub business process flow

Hi everyone,

I created an custom entity and added a lookup to this entity in a business process flow. A set 16x16 and 32x32 entity icons. On website, the icon is shown correctly, but in service hub, when I try to find in the lookup, the icon is in error.

Here is what I see:

However, on the regular site, i get this:

Also the image src doesn't appear to be the same. 

In normal site: 

<img src="/_Common/icon.aspx?cache=1&amp;iconType=gridIcon&amp;objectTypeCode=10046" class="ms-crm-IL-MenuItem-Icon ms-crm-IL-MenuItem-Icon-Rest">

In service hub: 

<img class="entityIcon" src="/_imgs/ico_16_10046.gif" alt="nms_composantjira" data-reactid=".7.0.$inlinelookup-bar.$LookupList.0.$1661.0">

Does someone know why the icon in the service hub isn't correct?