Is this supposed to work in Sequoia 15.5? I installed and when I drag the window to the right side of the screen it borders that half of the screen like normal, but when I let go nothing happens. Used to work great on Catalina.
I had this issue as well with Sequoia.
It turns out I had to re-enable BTT for all apps.
I normally hide the menu bar icon. The option to enable is found in the menu bar icon's dropdown.
Try re-enabling the menu icon (if hidden), then click it.
Select 'enable BBT for..', then select All apps.
That resolved the issue for me. I could then re-hide the menu bar icon and go on with my business as usual.
Hope that works for you!