Good to know! I haven't been able to get my hands on 1.3 so I haven't been able to test this 😆
I belive its because the dialog boxes for toolbars are now floating so they are not constrained to the main window. I did expect 1.3 to break some things for sure so I'll put out an update once I get it downloaded :)
Is the beta on steam or are you using a private build?
Also let me know if anything else breaks as this will be stuff I could fix in the next update 😀
Edit: Oh it looks like it is on steam! Excited to check this out this weekend :) Very pumped for the new features!