I believe this is going to be fixed with Threema Safe: https://threema.ch/en/blog/posts/threema-safe-en https://threema.ch/en/blog/posts/threema-safe-en. It is

I believe this is going to be fixed with Threema Safe: https://threema.ch/en/blog/posts/threema-safe-en https://threema.ch/en/blog/posts/threema-safe-en. It is already rolled out for Android and iOS should be soon according to the blog.