Fix iOS timers

[madsmtm]

Fixes #3816. Need to do some more research on this, which is why this is still a draft.

• [ ] Tested on all platforms changed
• [ ] Added an entry to the changelog module if knowledge of this change could be valuable to users
• [ ] Updated documentation to reflect any user-facing changes, including notes of platform-specific behavior
• [ ] Created or updated an example program if it would help users understand this functionality
• [ ] Updated feature matrix, if new features were added or implemented