Due to numerous complaints of the feature being annoying and obtrusive, it should be rolled back until known issues are solved.
It creates more harm and frustration than brings happiness and satisfaction.
T124294: Too many pop-ups before a user can start editing?
T133800: Add the "welcome" dialog (with button to switch) to the wikitext editor - comments towards the end
T135682: "Start editing" popup interferes with talk page usage
T135767: Have to close Welcome message on every single project separately
T135808: "Start editing" popup can't be dismissed without clicking "Start editing"
T135810: "Start editing" popup assumes the wiki has the world's discoveries as goal
T135811: "Start editing" popup contains Wikipedia logo
T135897: "Welcome to Wikipedia" CSS modal dialogue should have a close button
T135898: "Welcome to Wikipedia" CSS modal dialogue should be a11y compliant
T135937: "Start editing" popup should not appear after I've started typing
T135938: "Start editing" popup should probably say "Continue editing"
T135939: "Start editing" popup assumes the wiki can be edited by anyone
T154134: "Start editing" splashscreen can be shown dozens of times in a row on a wiki
T155096: "Start editing" splashscreen appears even for protected pages