Infinity Ward, developer of Call of Duty: Modern Warfare 4, moved quickly to fix a visual bug after gameplay footage from the game's first public showing went viral for the wrong reasons. The footage, filmed at a Kill Block mode demo at Fanatics Fest in New York, showed a muzzle flash bug on a DMR weapon that overwhelmed the screen like a flashbang, prompting a strong negative reaction from players online. The studio's swift turnaround has been praised as a positive sign of responsiveness ahead of the game's beta and launch.

The clip, streamed by French creator Skyrroz and shared by CharlieIntel, drew criticism on X/Twitter within a day. Infinity Ward confirmed the fault lay with a bugged suppressor using incorrect visual effects, rolled out a fix, and also reduced muzzle smoke opacity for all weapons ahead of further preview sessions this weekend, posting footage to demonstrate the correction. Visibility issues with recoil and smoke have long dogged the Modern Warfare sub-series, and while the writer reports the game otherwise played well over roughly two hours of hands-on time, Modern Warfare 4 is due out on PS5, PC and Xbox Series X|S on 23 October 2026.