Status of F-35 fixes?

Last year there was a number of problems outlined regarding F-35 (IPP, Helmet, potential buffetting, tail hook, heat damage, restricted flight profile etc as well as a classified problem that was assumed to be stealth related).

I’ve not really seem anything about these issues and all the media seems to be focusing on either training or issues with cost.

I was wondering what the status of the fixes for these issues is?