Summit

It's technically frowned upon for accessibility reasons (eg. accessibility users can technically select elements under the transparent layer). But yes I'm too lazy to do things properly so I will go this route. Also this is such an edge case.

Adding this transparent layer doesn't even fix the issue if you double tap really fast because events are handled asynchronously, converted to a serial queue and then set to the UI.

This means that a double tap can go off even if you show a transparent layer because by the time the UI is notified of the first tap, both taps are already in the touch event queue. So even if you show the transparent layer now, the 2nd tap will go off for sure. it will not block the 2nd tap. The 100% correct way is to have a flag to handle this. However this is extremely tricky because you need to check this flag everywhere and also disable each and every possible interaction with every single view manually.

As a middle ground, I fixed the issue where tapping two posts will show a black screen so at least in the next version, users who tap too fast will not end up in a weird state.