I watched the video and immediately tested it on my iphone. It's true?? About 50% of the time, typing "Thumb" resulted in "Thimb" or "Thjmb", while the visual feedback on the keyboard showed u being pressed instead!
Other comments here say Predictive Text is the culprit, but I already had that off. I also turned off Slide to Type. Same result.
Other comments here say Predictive Text is the culprit, but I already had that off. I also turned off Slide to Type. Same result.