This was working fine with my previous version of R (4.3.2) on RStudio, but after updating R to version 4.4.0 on Windows (haven't updated R on Linux yet), I'm getting a blank map viewer every time I try a leaflet map (including the ?leaflet Examples), both with the previous and with the newest version of RStudio (released 2024-04-29). It's working OK on R without RStudio, though.