I have several map pins with names that contain apostrophes. For instance, "Herbalist's Caverns". When I hover over the pin on the map, the name in this case would read "Herbalist's Caverns". When I click the pin for the floating info box, the label reads correctly.
Create a pin on a map. Give it an apostrophe in the name. Save the pin. Hover over the pin.
Map Pins
This is not a bug it is a security feature to prevent others from being able to harm your content.
This version of the maps cannot be fixed. We are aware and will be amending on the next upgrade.