We just started using Focal Point on our project and I'm seeing this issue. Using the preview functionality it updates the live version of the image style on the server. It would be nice if the preview button generated the image styles in some temporary folder of choice without touching the actual image styles already created being used on the live site.
- 🇫🇷France DrDam
diag : the point here is the same as many (many) other Crop/Image anomalies, Drupal Core don't know how handle multiple "version" of the same derivative ( I.E. couple ImageStyle x ImageFile ).
There is no real solution base of maintening the current implementation of the "focal point preview" feature.
2 solutions are possibles :
- Simulate the rendering (by CSS/html style manipulation) instead using the full derivative generation
- Add some "context" to the derivativ generation (I.E. hack some core process in order add this feature)