ToplineTexas is the third state in recent weeks to file a lawsuit against the popular online gaming platform Roblox, accusing it of operating a “digital playground that conceals predators,” as the platform faces growing controversy and lawsuits from families who say it hasn’t done enough to protect the platform’s large constituency of young users. Roblox defended banning "vigilante" users in a blog post Wednesday. (Photo Illustration by Jaque Silva/NurPhoto via Getty Images)NurPhoto via Getty ImagesKey Fact ...