Very simple issue. The first time I open Charts, it opens on my secondary (1080p) monitor. I’m able to click on an airport, VOR etc to get more information in the pop-up in the bottom left. If I move the Charts window to my main (4k) monitor, clicking does nothing, even after moving it back to the 1080p. To solve I need to close navigraph and reopen it.
Edit: this issue seems to be resolved after un/reinstalling. Will leave up in case anyone comes across this.