[mkgmap-dev] Strange issue when searching for POI

Hello, I own a Garmin Vista HCx and I have generated a map around my area from SOM using mkgmap. When I search for a POI I see a strange behavior: if I use "Nearest containing..." or "Select Category", the POIs show up correctly. If I use "Find by name" no POI show up in the list. Is there something I should chaange in the way I use mkgmap to solve this? Thanks in advance, N.