I've playing around with the new beta (the newest one) and unfortunately I've noticed a lot of weird behaviors in almost all the complex operations (boolean, trim, join, fillet, merge). I kept getting extra planar surfaces in the middle of fillets, missing patches when trying to join two surfaces, and in general, the sensation that the app is struggling more than usual in doing his calculations. Looks like the new library has got more bugs than expected. Anyway, the Shell command seems to have improved without drawbacks!
Cheers
Daniele