Hi,
PTE AV Studio 11.0.18 Beta is available:
Fixed an issue with selecting a group of transitions in the Project Options. Previously, if you selected a transitions group in one click, then after closing the window, all transitions in the group were not applied.
Download
Windows: https://files.wnsoft.com/test/pteavstudio-setup.exe
Mac: https://files.wnsoft.com/test/PTE-AV-Studio.dmg
(About window shows: 11.0.17 Build 2)