I have Processing 3 (3.5.4) and Processing 4.0b1 installed on a Windows 10 PC.
Here’s an odd thing! If I have Processing 3 open and I try to run Processing 4, the Processing 4 splash screen appears briefly but the new sketch opens in Processing 3.
When I quit both but run Processing 4 first, then try to open Processing 3, the P3 splash screen appears briefly but the new sketch opens in P4!
Has anyone else experienced this?
Phil