[Bug] Null clipboard string
Using v0.2.4 (but the zip is labeled as v0.2.3 so whichever version this actually is)

Consistently when I alt-tab multiple times, especially when a text input is active, I get crashes from the input handler. 
I also noticed this issue happens whenever the window is idle for too long. I do not have an exact time measurement but it has happened twice whenever I went away from the keyboard.

![image](https://user-images.githubusercontent.com/49764143/193462408-0a88fbdf-193b-4670-b8c1-5eb0fd2b9274.png)
