Try going to Safari/Preferences/Extensions and disable all extensions. Quit Safari, reopen, and see if the problem is solved. If so, enable extensions one or two at a time until you find which extension is causing the problem.
Try going to Safari/Preferences/Extensions and disable all extensions. Quit Safari, reopen, and see if the problem is solved. If so, enable extensions one or two at a time until you find which extension is causing the problem.