New findings.
Detect drag if pressed will stop working after every editor restart, and will work again after compiling the widget again.
But this is only in the editor and doesn’t work at all in the standalone mode.
However, when I checked with PrintString, it seemed like the execution for Detect drag if pressed was processed. So this is not a mouse event but rather a problem with Detect drag if pressed.
Does anyone know why it’s not working? I will provide you with all the information you need to solve the problem.