I was using Sandboxie 5.33.1 on Windows 10 1909, and could run LINE normally inside sandbox.
After updating to Windows 10 2004, everytime I run LINE with Sandboxie, it's started then hangs right after the window showed up. The title of the window displayed message like "not responding". If I wait long enough, LINE closed automatically.
I tried updating Sandboxie to 5.33.6 but can not solve the problem.
During the trial, there is once LINE ran normally without login, but the same problem occurred right after I entered the login info and clicked the login button in LINE window.