Describe the bug
BTT's "window snap" feature does not work (there is no "snap") with GTK3 apps on MacOS Mojave and Catalina.
To reproduce the bug, install a GTK3 app, e.g. Zim
brew install zim
Open it, and test the snap functionality with zim's window (e.g. 1/2 screen tile, by dragging the window to the left or right screen edge) and confirm it doesn't work
FWIW, windows of older GTK2 apps e.g. older versions of zim were working fine with BTT window snapping.
Affected input device (e.g. MacBook Trackpad, Magic Mouse/Trackpad, Touch Bar, etc.):
- Type of Mac: Macbook
- macOS version: Catalina 10.15, however the same problem was happening in all Mojave versions. I haven't tested earlier versions of macos.
- BetterTouchTool version: all versions - this never worked
Additional information (e.g. StackTraces, related issues, screenshots, workarounds, etc.):