The F-22 had plenty of problems during development as well. One reason that you don't hear about the problems is because the F-22 was never sold to foreign countries, so it was easier to keep quiet about the issues. If an issue was deemed a vulnerability it could be declared classified and illegal to discuss publicly. And anything that wouldn't be deemed a vulnerability isn't worth discussing on the news.
In contrast, the F-35 has a crazy fast development timeline, and is being sold to several countries. So they are biting off a much bigger chunk, and being much more public about it as part of the political game. So it's harder to keep quiet when you make a huge deal about showing up at an airshow in the UK and then have to cancel because your fleet got grounded because of fuel system issues. The overall difference isn't that the F-35 has more problems, it's just that they are finding them quicker and you're actually hearing about them. (Edit: the missed airshow was because of engine fires, the fuel system was a separate issue- sorry for the mistake. https://www.telegraph.co.uk/finance/newsbysector/industry/de...)
The F-22 has also killed pilots, caused others to eject with unknown causes, and had other reports of pilots losing consciousness but eventually recovering. They grounded the whole fleet several years ago, the oxygen generation system has been the subject of several complaints. This probably wouldn't have made the news either except for the fact that people died.
In contrast, the F-35 has a crazy fast development timeline, and is being sold to several countries. So they are biting off a much bigger chunk, and being much more public about it as part of the political game. So it's harder to keep quiet when you make a huge deal about showing up at an airshow in the UK and then have to cancel because your fleet got grounded because of fuel system issues. The overall difference isn't that the F-35 has more problems, it's just that they are finding them quicker and you're actually hearing about them. (Edit: the missed airshow was because of engine fires, the fuel system was a separate issue- sorry for the mistake. https://www.telegraph.co.uk/finance/newsbysector/industry/de...)
The F-22 has also killed pilots, caused others to eject with unknown causes, and had other reports of pilots losing consciousness but eventually recovering. They grounded the whole fleet several years ago, the oxygen generation system has been the subject of several complaints. This probably wouldn't have made the news either except for the fact that people died.