Under normal circumstances, this anti-shake function will not fail, and network congestion will lead to this situation. Just restart this software.
By default, the recommended anti-shake method is used for cropping. You can choose the option of "most stable" or "minimum cropping" according to the degree of image jitter. If the imported video is not very shaky, you can choose "Minimum Cropping". After checking the "Video Anti-shake" option, the entry and exit of video anti-shake processing will also be displayed in the player window.