With Ubuntu changing to Firefox as a snap there is a problem with SageMath's location for temporary files, i.e., $HOME/.sage/temp/$HOSTNAME/<some random 4 digit number>
, since the snap version of Firefox can't access hidden folders. Is there a way to set another location to hold the html files generates by plot3d? (The files are there but my default browser, Firefox, can't display them.) A less satisfactory solution would be to use a different browser (e.g., Epiphany) just to display these files.