We've received a number of reports from users that have run into crashes or hangs when displaying certain types of plots in notebooks in Wolfram Language 14.0, particularly involving ListPlot and related functions.

We have investigated this and believe we now understand the issue. It involves an interaction between dynamic plot highlighting and the Suggestions Bar, both of which are enabled by default. We believe that disabling either (or both) of these should avoid the issue until it can be fully fixed in an upcoming release.

The Suggestions Bar can be disabled from the Preferences menu in the Interface tab.

To disable dynamic plot highlighting globally:

InitializationValue[$Initialization] = Hold[Charting`$InteractiveHighlighting = False;]